Converting from virObject to GObject is reasonably straightforward,
as illustrated by this patch for virIdentity
In the header file
- Remove
typedef struct _virIdentity virIdentity
- Add
#define VIR_TYPE_IDENTITY virIdentity_get_type ()
G_DECLARE_FINAL_TYPE (virIdentity, vir_identity, VIR, IDENTITY, GObject);
Which provides the typedef we just removed, and class
declaration boilerplate and various other constants/macros.
In the source file
- Change 'virObject parent' to 'GObject parent' in the struct
- Remove the virClass variable and its initializing call
- Add
G_DEFINE_TYPE(virIdentity, vir_identity, G_TYPE_OBJECT)
which declares the instance & class constructor functions
- Add an impl of the instance & class constructors
wiring up the finalize method to point to our dispose impl
In all files
- Replace VIR_AUTOUNREF(virIdentityPtr) with g_autoptr(virIdentity)
- Replace virObjectRef/Unref with g_object_ref/unref. Note
the latter functions do *NOT* accept a NULL object where as
libvirt's do. If you replace g_object_unref with g_clear_object
it is NULL safe, but also clears the pointer.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
To simplify the later conversion from virObject to GObject, introduce
the use of g_autoptr to the virIdentity implementnation and test suite.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Replace use of the gnulib base64 module with glib's own base64 API family.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Libvirt currently uses the VIR_AUTOUNREF macro for auto cleanup of
virObject instances. GLib approaches things differently with GObject,
reusing their g_autoptr() concept.
This introduces support for g_autoptr() with virObject, to facilitate
the conversion to GObject.
Only virObject classes which are currently used with VIR_AUTOREF are
updated. Any others should be converted to GObject before introducing
use of autocleanup.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
To facilitate porting over to glib, this rewrites the auto cleanup
macros to use glib's equivalent.
As a result it is now possible to use g_autoptr/VIR_AUTOPTR, and
g_auto/VIR_AUTOCLEAN, g_autofree/VIR_AUTOFREE interchangably, regardless
of which macros were used to declare the cleanup types.
Within the scope of any single method, code must remain consistent
using either GLib or Libvirt macros, never mixing both. New code
must preferentially use the GLib macros, and old code will be
converted incrementally.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Using the standard macro will facilitate the conversion to glib's
auto cleanup macros.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the string duplication APIs to use the g_strdup family of APIs.
We previously used the 'strdup-posix' gnulib module because mingw does
not set errno to ENOMEM on failure
We previously used the 'strndup' gnulib module because this function
does not exist on mingw.
We previously used the 'vasprintf' gnulib module because of many GNU
supported format specifiers not working on non-Linux platforms. glib's
own equivalent standardizes on GNU format specifiers too.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the VIR_ALLOC family of APIs with use of the g_malloc family of
APIs. Use of VIR_ALLOC related functions should be incrementally phased
out over time, allowing return value checks to be dropped. Use of
VIR_FREE should be replaced with auto-cleanup whenever possible.
We previously used the 'calloc-posix' gnulib module because mingw does
not set errno to ENOMEM on failure.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Add the main glib.h to internal.h so that all common code can use it.
Historically glib allowed applications to register an alternative
memory allocator, so mixing g_malloc/g_free with malloc/free was not
safe.
This was feature was dropped in 2.46.0 with:
commit 3be6ed60aa58095691bd697344765e715a327fc1
Author: Alexander Larsson <alexl@redhat.com>
Date: Sat Jun 27 18:38:42 2015 +0200
Deprecate and drop support for memory vtables
Applications are still encourged to match g_malloc/g_free, but it is no
longer a mandatory requirement for correctness, just stylistic. This is
explicitly clarified in
commit 1f24b36607bf708f037396014b2cdbc08d67b275
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Thu Sep 5 14:37:54 2019 +0100
gmem: clarify that g_malloc always uses the system allocator
Applications can still use custom allocators in general, but they must
do this by linking to a library that replaces the core malloc/free
implemenentation entirely, instead of via a glib specific call.
This means that libvirt does not need to be concerned about use of
g_malloc/g_free causing an ABI change in the public libary, and can
avoid memory copying when talking to external libraries.
This patch probes for glib, which provides the foundation layer with
a collection of data structures, helper APIs, and platform portability
logic.
Later patches will introduce linkage to gobject which provides the
object type system, built on glib, and gio which providing objects
for various interesting tasks, most notably including DBus client
and server support and portable sockets APIs, but much more too.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We mirror the labeling strategy that was used for its top image
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This will be used for recursing into externalDataStore
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Rename the existing virSecuritySELinuxRestoreImageLabelInt
to virSecuritySELinuxRestoreImageLabelSingle, and extend the new
ImageLabelInt handle externalDataStore
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This will simplify future patches and make the logic easier to follow
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The only caller always passes in a non-null parent
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
All the SetFileCon calls only differ by the label they pass in.
Rework the conditionals to track what label we need, and use a
single SetFileCon call
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
We mirror the labeling strategy that was used for its sibling
image
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This will be used for recursing into externalDataStore
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Rename the existing virSecurityDACRestoreImageLabelInt
to virSecurityDACRestoreImageLabelSingle, and extend the new
ImageLabelInt handle externalDataStore
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This will simplify future patches and make the logic easier to follow
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The only caller always passes in a non-null parent
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add virStorageSourceNewFromExternalData, similar to
virStorageSourceNewFromBacking and use it to fill in a
virStorageSource for externalDataStore
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add the plumbing to track a externalDataStoreRaw as a virStorageSource
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Future patches will use this for external data file handling
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
For the only usage, the rel == parent->backingStoreRaw, so drop
the direct access
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Call qcow2GetExtensions to actually fill in the virStorageSource
externalDataStoreRaw member
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add the plumbing to track a qcow2 external data file path in
virStorageSource
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
From qemu.git docs/interop/qcow2.txt
== String header extensions ==
Some header extensions (such as the backing file format name and
the external data file name) are just a single string. In this case,
the header extension length is the string length and the string is
not '\0' terminated. (The header extension padding can make it look
like a string is '\0' terminated, but neither is padding always
necessary nor is there a guarantee that zero bytes are used
for padding.)
So we shouldn't be checking for a \0 byte at the end of the backing
format section. I think in practice there always is a \0 but we
shouldn't depend on that.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
To backingFormat, which makes it more clear. Move it to the end of
the argument list which will scale nicer with future patches
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
...to qcow2GetExtensions. We will extend it for more extension
parsing in future patches
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is a step towards making this qcow2GetBackingStoreFormat into
a generic qcow2 extensions parser
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is a step towards making this qcow2GetBackingStoreFormat into
a generic qcow2 extensions parser
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The qcow1 and qcow2 variants are identical, so remove the wrappers
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Rather than require a boolean to be passed in
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Letting qcowXGetBackingStore fill in format gives the same behavior
we were opencoding in qcow1GetBackingStore
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
From f772b3d91f the intention of this code seems to be to set
format=NONE when the image does not have a backing file. However
'buf' here is the whole qcow1 file header. What we want to be
checking is 'res' which is the parsed backing file path.
qcowXGetBackingStore sets this to NULL when there's no backing file.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Check explicitly for BACKING_STORE_OK and not its 0 value
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
It is only used in virstoragefile.c
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1755803
The /dev/tpmN file can be opened only once, as implemented in
drivers/char/tpm/tpm-dev.c:tpm_open() from the kernel's tree. Any
other attempt to open the file fails. And since we're opening the
file ourselves and passing the FD to qemu we will not succeed
opening the file again when locking it for seclabel remembering.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
While in most cases we want to remember/recall label for a
chardev, there are some special ones (like /dev/tpm0) where we
don't want to remember the seclabel nor recall it. See next
commit for rationale behind.
While the easiest way to implement this would be to just add new
argument to virSecurityDACSetChardevLabel() this one is also a
callback for virSecurityManagerSetChardevLabel() and thus has
more or less stable set of arguments. Therefore, the current
virSecurityDACSetChardevLabel() is renamed to
virSecurityDACSetChardevLabelHelper() and the original function
is set to call the new one.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
So far all items on the chown/setfilecon list have the same
.remember value. But this will change shortly. Therefore, don't
try to lock paths which we won't manipulate XATTRs for.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
On Fedora, already whitelisted paths to AAVMF and OVMF binaries
are symlinks to binaries under /usr/share/edk2/. Add that directory
to the RO whitelist so virt-aa-helper-test passes
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This isn't exactly equivalent setting (acpi_firmware may point to
non-SLIC ACPI table), but it's the most behavior preserving option.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Libxl driver did not support setup additional acpi firmware to xen
guest. It is necessary to activate OEM Windows installs. This patch
allow to define in OS section acpi table param (which supported domain
common schema).
Signed-off-by: Ivan Kardykov <kardykov@tabit.pro>
[added info to docs/formatdomain.html.in]
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
All the 6 virGetConnect* functions in driver.c shares the
same code base. This patch creates a new static function
virGetConnectGeneric() that contains the common code to
be used with all other virGetConnect*.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
When constructing QMP capabilities we allocate a dummy domain
object to pass to qemuMonitorOpen(). However, after 75dd595861
the function also expects domain definition to be allocated for
the domain object. The referenced commit already fixed
qemumonitortestutils.c but forgot to fix the other caller:
qemuProcessQMPConnectMonitor().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This patch adds the implementation of the ccf-assist pSeries
feature, based on the QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST
capability that was added in the previous patch.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Linux kernel 5.1 added a new PPC KVM capability named
KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST, which is exposed to the QEMU guest
since QEMU commit 8ff43ee404d under a new sPAPR capability called
SPAPR_CAP_CCF_ASSIST. This cap indicates whether the processor supports
hardware acceleration for the count cache flush workaround, which
is a software workaround that flushes the count cache on context
switch. If the processor has this hardware acceleration, the software
flush can be shortened, resulting in performance gain.
This hardware acceleration is defaulted to 'off' in QEMU. The reason
is that earlier versions of the Power 9 processor didn't support
it (it is available on Power 9 DD2.3 and newer), and defaulting this
option to 'on' would break migration compatibility between the Power 9
processor class.
However, the user running a P9 DD2.3+ hypervisor might want to create
guests with ccf-assist=on, accepting the downside of only being able
to migrate them only between other P9 DD2.3+ hosts running upstream
kernel 5.1+, to get a performance boost.
This patch adds this new capability to Libvirt, with the name of
QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This device is a very simple framebuffer device supported by qemu that
is mostly intended to use as a boot framebuffer in conjunction with a
vgpu. However, there is also a standalone ramfb device that can be used
as a primary display device and is useful for e.g. aarch64 guests where
different memory mappings between the host and guest can prevent use of
other devices with framebuffers such as virtio-vga.
https://bugzilla.redhat.com/show_bug.cgi?id=1679680 describes the
issues in more detail.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Add a qemu capbility to see if the standalone ramfb device is available.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
When the bochs display type was added, the capability was never checked.
Add that check in the same place as the other video device capability
checks.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
This will simplify adding support for qcow2 external data_file
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is closer to what security_selinux.c does, and will help add
support for qcow2 external data_files
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This mirrors the code layout in security_selinux.c. It will also make
it easier to share the checks for qcow2 external data_file support
eventually
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The virStorageSource must have everything it needs
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
There's only one caller, so open code the file_add_path behavior
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
true is always passed here, so delete the unused code path and
adjust the associated comment
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
It is the only user. Rename it to match the local style
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This reverts commit a5a777a8ba.
After previous commit the domain won't disappear while connecting
to monitor. There's no need to ref monitor config then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
When connecting to qemu's monitor the @vm object is unlocked.
This is justified - connecting may take a long time and we don't
want to wait with the domain object locked. However, just before
the domain object is locked again, the monitor's FD is registered
in the event loop. Therefore, there is a small window where the
event loop has a chance to call a handler for an event that
occurred on the monitor FD but vm is not initalized properly just
yet (i.e. priv->mon is not set). For instance, if there's an
incoming migration, qemu creates its socket but then fails to
initialize (for various reasons, I'm reproducing this by using
hugepages but leaving the HP pool empty) then the following may
happen:
1) qemuConnectMonitor() unlocks @vm
2) qemuMonitorOpen() connects to the monitor socket and by
calling qemuMonitorOpenInternal() which subsequently calls
qemuMonitorRegister() the event handler is installed
3) qemu fails to initialize and exit()-s, which closes the
monitor
4) The even loop sees EOF on the monitor and the control gets to
qemuProcessEventHandler() which locks @vm and calls
processMonitorEOFEvent() which then calls
qemuMonitorLastError(priv->mon). But priv->mon is not set just
yet.
5) qemuMonitorLastError() dereferences NULL pointer
The solution is to unlock the domain object for a shorter time
and most importantly, register event handler with domain object
locked so that any possible event processing is done only after
@vm's private data was properly initialized.
This issue is also mentioned in v4.2.0-99-ga5a777a8ba.
Since we are unlocking @vm and locking it back, another thread
might have destroyed the domain meanwhile. Therefore we have to
check if domain is still active, and we have to do it at the
same place where domain lock is acquired back, i.e. in
qemuMonitorOpen(). This creates a small problem for our test
suite which calls qemuMonitorOpen() directly and passes @vm which
has no definition. This makes virDomainObjIsActive() call crash.
Fortunately, allocating empty domain definition is sufficient.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
QEMU 2.11 for ppc64 changed all CPU model names to lower case. Since
libvirt can't change the model names for compatibility reasons, we need
to translate the matching lower case models to the names known by
libvirt.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reverts commit 2d8721e260.
This fix was both incomplete and too general. It only fixed domain
startup, but libvirt would still report empty list of supported CPU
models with recent QEMU for ppc64. On the other hand, while ppc64 QEMU
ignores case when looking up CPU model names, x86_64 QEMU does case
sensitive lookup. Without reverting this patch, libvirt could happily
accept CPU model names which are not supported by QEMU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reverts commit 61b4e8aaf1.
After previous commits this is no longer needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1755303
With the recent work in daemon split and socket activation
daemons can come and go. They can and will be started many times
during a session which results in objects being autostarted
multiple times. This is not optimal. Use
virDriverShouldAutostart() to determine if autostart should be
done or not.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Some of objects we manage can be autostarted on libvirtd startup
(e.g. domains, network, storage pools). The idea was that when
the host is started up these objects are started too without need
of user intervention. However, with the latest daemon split and
switch to socket activated, short lived daemons (we put --timeout
120 onto each daemon's command line) this doesn't do what we want
it to. The problem is not new though, we already had the session
daemon come and go and we circumvented this problem by
documenting it (see v4.10.0-92-g61b4e8aaf1). But now that we meet
the same problem at all fronts it's time to deal with it.
The solution implemented in this commit is to have a file (one
per each driver) that:
1) if doesn't exist, is created and autostart is allowed for
given driver,
2) if it does exist, then autostart is suppressed for given
driver.
All the files live in a location that doesn't survive host
reboots (/var/run/ for instance) and thus the file is
automatically not there on fresh host boot.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The comment says that the function kills domains and networks.
This is obviously not the case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The ldexp gnulib module adds "-lm" to the $LIBS variable if-and-only-if
the ldexp() function require linking to libm. There is no harm in
linking to libm even if it isn't required for ldexp(), so simply drop
the gnulib module.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We don't need to care about very old GCC versions, so implementing the
ignore_value macro directly is not a significant burden.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We're using gnulib to get ffs, ffsl, rotl32, count_one_bits,
and count_leading_zeros. Except for rotl32 they can all be
replaced with gcc/clangs builtins. rotl32 is a one-line
trivial function.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
stpcpy returns a pointer to the end of the string just copied
which in theory makes it easier to then copy another string
after it. We only use stpcpy in one place though and that
is trivially rewritten to avoid stpcpy with no loss in code
clarity or efficiency.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The _getopt_internal_r func is not intended for public use, it is an
internal function shared between the gnulib getopt and argp modules.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
086c19d69 added bochs-display capability but didn't fill in the info for
domain capabilities.
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This command is hooked into the virsh hypervisor-cpu-compare command.
As such, the CPU model XML provided to the command will be compared
to the hypervisor CPU contained in the QEMU capabilities file for the
appropriate QEMU binary (for s390x, this CPU definition can be observed
via virsh domcapabilities).
QMP will report that the XML CPU is either identical to, a subset of,
or incompatible with the hypervisor CPU. s390 can also report that
the XML CPU is a "superset" of the hypervisor CPU. This response is
presented as incompatible, as this CPU model would not be able to run
on the hypervisor.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Message-Id: <1568924706-2311-15-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Implement an XML to virCPUDefPtr helper that handles the ctxt
prerequisite for virCPUDefParseXML.
This does not alter any functionality.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Message-Id: <1568924706-2311-14-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This capability enables comparison of CPU models via QMP.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Message-Id: <1568924706-2311-13-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Interfaces with QEMU to compare CPU models. The command takes two CPU
models, A and B, that are given a model name and an optional list of
CPU features. Through the query-cpu-model-comparison command issued
via QMP, a result is produced that contains the comparison evaluation
string (identical, superset, subset, incompatible).
The list of properties (aka CPU features) that is returned from the QMP
response is ignored.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Message-Id: <1568924706-2311-12-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Perform a full CPU model expansion on the result of the baselined
model name when the features flag is present.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <1568924706-2311-11-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This command is hooked into the virsh hypervisor-cpu-baseline command.
The CPU models provided in the XML sent to the command will be baselined
via the query-cpu-model-baseline QMP command. The resulting CPU model
will be reported.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Message-Id: <1568924706-2311-10-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This capability enables baselining of CPU models via QMP.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Message-Id: <1568924706-2311-9-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Interfaces with QEMU to baseline CPU models. The command takes two
CPU models, A and B, that are given a model name and an optional list
of CPU features. Through the query-cpu-model-baseline command issued
via QMP, a result is produced that contains a new baselined CPU model
that is guaranteed to run on both A and B.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Message-Id: <1568924706-2311-8-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Modify the error messages in qemuMonitorJSONParseCPUModelData to print
the command name provided to the function.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <1568924706-2311-7-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Some older s390 CPU models (e.g. z900) will not report props as a
response from query-cpu-model-expansion. As such, we should make the
props field optional when parsing the return data from the QMP response.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <1568924706-2311-6-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
query-cpu-model-baseline/comparison will accept a list of features
as part of the command. Since CPUs may be defined with CPU feature
policies, let's parse it to the appropriate boolean that the QMP
command expects.
A feature that is set to required, force, or if it is a hypervisor
CPU feature (-1), then set the property value to true. Otherwise
(optional, disabled) set the value to false.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <1568924706-2311-5-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
When expanding a CPU model via query-cpu-model-expansion, any features
that were a part of the original model are discarded. For exmaple,
when expanding modelA with features f1, f2, a full expansion may reveal
feature f3, but the expanded model will not include f1 or f2.
Let's pass a virCPUDefPtr to the expansion function in preparation for
taking features into consideration.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <1568924706-2311-4-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
With refactoring most of the expansion function, let's take care of
some additional cleanups.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <1568924706-2311-3-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Refactor some code in qemuMonitorJSONGetCPUModelExpansion to be later
used for the comparison and baseline functions.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <1568924706-2311-2-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Parseability of disk name is now checked in qemuDomainDeviceDefValidateDisk().
Signed-off-by: Pavel Mores <pmores@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The way in which the qemu driver generates aliases for disks involves
ignoring the partition number part of a target dev name. This means that
all partitions of a block device and the device itself all end up with the
same alias. If multiple such disks are specified in XML, the resulting
name clash makes qemu invocation fail.
Since attaching partitions to qemu VMs doesn't seem to make much sense
anyway, disallow partitions in target specifications altogether.
https://bugzilla.redhat.com/show_bug.cgi?id=1346265
Signed-off-by: Pavel Mores <pmores@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The VIR_TYPED_PARAM_* enum fields are defined in libvirt-common.h, not
in the remote protcol, so shouldn't be part of the protocol structs
output check. This avoids similar problems hitting when we add use of
glib, which has other such anonymous enums.
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Consider having a nc binary in the path with a space in its name,
for example '/tmp/fo o/nc'
This results in libvirt running SSH with the following arg value
"'if ''/tmp/fo o/nc'' -q 2>&1 | grep \"requires
an argument\" >/dev/null 2>&1; then ARG=-q0;
else ARG=;fi;''/tmp/fo o/nc'' $ARG -U
/var/run/libvirt/libvirt-sock'"
The use of the single quote escaping was introduced by
commit 6ac6238de3
Author: Guido Günther <agx@sigxcpu.org>
Date: Thu Oct 13 21:49:01 2011 +0200
Use virBufferEscapeShell in virNetSocketNewConnectSSH
to escape the netcat command since it's passed to the shell. Adjust
expected test case output accordingly.
While the intention of this change was good, the result is broken as it
is still underquoted.
On the SSH server side, SSH itself runs the command via the shell.
Our command is then invoking the shell again. Thus we see
$ virsh -c qemu+ssh://root@domokun/system?netcat=%2Ftmp%2Ffo%20o%2Fnc list
error: failed to connect to the hypervisor
error: End of file while reading data: sh: /tmp/fo: No such file or directory: Input/output error
With the second level of escaping added we can now successfully use a nc
binary with a space in the path.
The original test case added was misleading as it illustrated using a
binary path of 'nc -4' which is not a path, it is a command with a
separate argument, which is getting interpreted as a path.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In the error code path, the temporary parameters are not freed.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In the domain capabilities XML there are FW image paths printed.
There are two sources for the image paths (in order of
preference):
1) firmware descriptor files - as returned by
qemuFirmwareGetSupported()
2) a compile time list of FW:NRAM pairs which can be overridden
in qemu.conf
If either of those contains a duplicate FW image path (which is
a valid use case) it is printed twice in the capabilities XML.
While it's technically not a bug, it doesn't look good.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Similarly to the snapshot code there's no reason to modify current
checkpoint until we are done creating the new one.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since commit f105627992 we store whether a snapshot is current globally
rather than locally in the snapshot object.
This means that we don't have to unset the current snapshot prior to
taking/reverting the snapshot and we can do it only when everything is
done successfully.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The AppArmor profile generated by virt-aa-helper is too strict for swtpm.
This change contains 2 small fixes:
- Relax append access to swtpm's log file to permit write access instead.
Append access is insufficient because the log is opened with O_CREAT.
- Permit swtpm to acquire a lock on its lock file.
Signed-off-by: Chris Coulson <chris.coulson@canonical.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Ensure that the FD we're passing to QEMU is actually open, so we get a
sane error message upfront instead of telling QEMU to use a closed FD.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The video private data was not initializing the vhostuser FD
causing us to attempt to close FD 0 many times over.
Fixes
commit ca60ecfa8c
Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Date: Mon Sep 23 14:44:36 2019 +0400
qemu: add qemuDomainVideoPrivate
Since the test suite does not invoke qemuExtDevicesStart(), no
vhost_user_fd will be present when generating test XML. To deal
with this we can must a fake FD number. While the current XML
is using FD == 0, we pick a very interesting number that's unlikely
to be a real FD, so that we're more likely to see any mistakes
closing the invalid FD.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Use the new generator residing in the monitor code rather than directly
using qemuMonitorJSONTransactionAdd.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Unify with other code that generates parameters for the 'transaction'
command.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Rather than generating the transaction contents in random places add a
unified set of APIs to generate the contents for a 'transaction' for the
dirty bitmap APIs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The QEMU_CAPS_INCREMENTAL_BACKUP will be enabled once all bits of the
incremental backup feature work as expected which means also properly
interacting with blockjobs and snapshots.
Thus we can allow blockjobs and snapshots if QEMU_CAPS_INCREMENTAL_BACKUP
is present even when checkpoints exist.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Rather than having to fix 5 places once we support the combination, add
a function called by all the blockjob/snapshot APIs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Checkpoints by themselves are not very useful for anything else than
testing the few bitmap interactions that are currently implemented.
It's very unlikely that anybody used this feature and thus we can
disable it until we have a more complete implementation ready.
Additionally the code for deleting checkpoints has many broken failure
scenarios which should be fixed first. This will require support of
deleting a bitmap in a qemu 'transaction' which was not released yet.
Curious users obviously can use the qemu namespace in the XML to enable
this for experiments:
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
...
<qemu:capabilities>
<qemu:add capability='incremental-backup'/>
</qemu:capabilities>
</domain>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Add a new all-covering capability which will be used to interlock
incremental backup support until all bits are ready.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Add a 'cleanup' label and use jumps as we do in other places.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Once somebody is motivated enough to add the support for the quiesce
flag or offline checkpoint deletion they are welcome to do so but we
don't need to have a reminder.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
There's nothing that uses it directly now. Also not allowing direct use
will promote our layering.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Finish the refactor by moving and renaming functions from qemu_domain.c
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Move all extensive functions to a new file so that we don't just pile
everything in the common files. This obviously isn't possible with
straight code movement as we still need stubs in qemu_driver.c
Additionally some functions e.g. for looking up a checkpoint by name
were so short that moving the impl didn't make sense.
Note that in the move the new file also doesn't use
virQEMUMomentReparent but rather an stripped down copy. As I plan to
split out snapshot code into a separate file the unification doesn't
make sense any more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The interlocking with snapshots is executed prior to the ACL check so if
a VM has snapshots invoking the checkpoint API may leak it's existance.
Introduced with the qemuDomainCheckpointCreateXML API implementation in
commit 5f4e079650.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
We recently forbid the use of --listen with socket activation:
commit 3a6a725b8f
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Thu Aug 22 14:52:16 2019 +0100
remote: forbid the --listen arg when systemd socket activation
In this change we forgot that virtproxyd doesn't have a --listen
parameter, and instead behaves as if it was always present. Thus
when systemd socket activation is present, we must disable this
built-in default
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
On Fedora 31, starting a 'mock' build alters /proc/$pid/cgroup,
probably due to usage of systemd-nspawn.
Before:
$ cat /proc/self/cgroup
0::/user.slice/user-1000.slice/...
After:
$ cat /proc/self/cgroup
1:name=systemd:/
0::/user.slice/user-1000.slice/...
The cgroupv2 code mishandles that first line in the second case, which
causes VM startup to fail with: Unable to read from
'/sys/fs/cgroup/machine/cgroup.controllers': No such file or directory
The kernel docs[1] say that the cgroupv2 path will always start with
'0::', which in the code here controllers="". Only set the v2 placement
path when we see that cgroup file entry.
[1] https://www.kernel.org/doc/html/v5.3/admin-guide/cgroup-v2.html#processeshttps://bugzilla.redhat.com/show_bug.cgi?id=1751120
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The code that gets the job to refresh disk sizes was not merged yet so
remove this artifact.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
'vm' is passed in which contains the definition which contains the UUID
so we don't need another parameter for this.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'vm' is passed in which contains the definition which contains the UUID
so we don't need another parameter for this.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move it to qemu_domain.c and rename it to qemuDomainObjFromDomain. This
will allow reusing it after splitting out checkpoint code from
qemu_driver.c.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As it turns out, on my 32bit ARM machine size_t is not the same
size as ULL. However, @length argument for both functions is type
of size_t but it's treated as ULL - for instance when passed to
qemuMonitorJSONMakeCommand(). The problem is that because of
"U:size" the virJSONValueObjectAddVArgs() expects an ULL argument
but on the stack there are size_t and char * arguments (which
coincidentally add up to size of ULL). So the created command has
only two arguments "val" and incorrect "size" and no "path" which
is required.
I've tried to find other occurrences of this pattern but at the
rest of places where size_t is used it tracks size of an array so
that's safe.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Drop the 'driver' argument since it can be extracted from private data
to shorten the argument list.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Before the refactoring that properly separated the network driver from
the hypervisor driver and forced all interaction to go through public
APIs, all network usage counters were zeroed when the network driver
was initialized, and the network driver's now-deprecated
"semi-private" API networkNotifyActualDevice() was called for every
interface of every domain as each hypervisor "reconnected" its domains
during a libvirtd restart, and this would refresh the usage count for
each network.
Post-driver-split, during libvirtd restart/reconnection of the running
domains, the function virDomainNetNotifyActualDevice() is called by
each hypervisor driver for every interface of every domain restart,
and this function has code to re-register interfaces, but it only
calls into the network driver to re-register those ports that don't
already have a valid portid (ie. one that is not simply all 0),
assuming that those with valid portids are already known (and counted)
by the network driver.
commit 7ab9bdd47 recently modified the network driver so that, in most
cases, it properly resyncs each network's connection count during
libvirtd (or maybe virtnetworkd) restart by iterating through the
network's port list. This doesn't account for the case where a network
is destroyed and restarted while there are running domains that have
active ports on the network. In that case, the entire port list and
connection count for that network is lost, and now even a restart of
libvirtd/virtnetworkd/virtqemud, which in the past would resync the
connection count, doesn't help (the network driver thinks there are no
active ports, while the hypervisor driver knows about all the active
ports, but mistakenly believes that the network driver also knows).
The solution to this is to not just bypass valid portids during the
call to virDomainNetworkNotifyActualDevice(). Instead, we query the
network driver about the portid that was preserved in the domain
status, and if it is not registered, we register it.
(NB: while it would technically be correct to just generate a new
portid for these cases, it makes for less churn in portids (and thus
may make troubleshooting simpler) if we make the small fix to
virDomainNetDefActualToNetworkPort() that preserves existing valid
portids rather than unconditionally generating a new one.)
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
define a VIR_DEFINE_AUTOPTR_FUNC() to autofree virNetworkPortDefs, and
convert all uses of virNetworkPortDefPtr that are appropriate to use
it.
This coincidentally fixes multiple potential memory leaks (in failure
cases) in networkPortCreateXML()
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The existing QEMU and vbox URI path validation consider
that a privileged user can use both a "/system" and a
"/session" URI. This differs from all the other drivers
that forbids the root user to use "/session" URI.
Let's update virConnectValidateURIPath() to handle these
cases as exceptions, using the already existent 'entityName'
value to handle "QEMU" and "vbox" differently. This allows
us to use the validateURI function in these cases without
changing the existing behavior of other drivers.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Suggested-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
The code to validate the URI path is repeated across several
files. This patch creates a common validation code to be
used across all of them.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Suggested-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
A virDomainNetDef object in a domain's nets array might contain a
virDomainHostdevDef, and when this is the case, the domain's hostdevs
array will also have a pointer to this embedded hostdev (this is done
so that internal functions that need to perform some operation on all
hostdevs won't leave out the type='hostdev' network interfaces).
When a network device was updated with virDomainUpdateDeviceFlags(),
we were replacing the entry in the nets array (and free'ing the
original) but forgetting about the pointer in the hostdevs array
(which would then point to the now-free'd hostdev contained in the old
net object.) This often resulted in a libvirtd crash.
The solution is to add a function, virDomainNetUpdate(), called by
qemuDomainUpdateDeviceConfig(), that updates the hostdevs array
appropriately along with the nets array.
Resolves: https://bugzilla.redhat.com/1558934
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The private data for video definition is created in
virDomainVideoDefNew() and we attempt to free it in
virDomainVideoDefFree(). This seems to work, except
the free function calls clear function which zeroes
out the whole structure and thus virObjectUnref()
which is called on private data does nothing.
2,568 bytes in 107 blocks are definitely lost in loss record 207 of 213
at 0x4A35476: calloc (vg_replace_malloc.c:752)
by 0x50A6048: virAllocVar (viralloc.c:346)
by 0x513CC5A: virObjectNew (virobject.c:243)
by 0x4DC1DEE: qemuDomainVideoPrivateNew (qemu_domain.c:1337)
by 0x51A6BD6: virDomainVideoDefNew (domain_conf.c:2831)
by 0x51B9F06: virDomainVideoDefParseXML (domain_conf.c:15541)
by 0x51CB761: virDomainDefParseXML (domain_conf.c:21158)
by 0x51C5973: virDomainDefParseNode (domain_conf.c:21708)
by 0x51C583A: virDomainDefParse (domain_conf.c:21663)
by 0x51C58AE: virDomainDefParseFile (domain_conf.c:21688)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The open-coded version does not take much more space and additionally we
get rid of the hidden goto.
This also requires us to remove the 'cleanup' section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The bulk stats functions are specific as they pass around the list into
many sub-functions and also a substantial amount of the entries uses
formatted names for indexing purposes. This makes them ideal to be
converted to the new virTypedParamList helpers.
Unfortunately given how the functions are used this requires a big-bang
rewrite of all of the calls to add entries to the parameter list.
Given that a substantial simplification is achieved as well as a pretty
significant change to the original code is required some macros which
were used only sporadically were replaced by inline calls rather than
tweaking the macros first and deleting them later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use QEMU_ADD_BLOCK_PARAM_ULL instead since all parameters are now
unsigned.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
