We don't want to repeat the choice of default netcat binary setting in
three different places. This will also make it possible to do better
error reporting in the helper.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Three parts of the code all build up the same SSH shell script
snippet for remote tunneling the RPC protocol, but in slightly
different ways. Combine them all into one helper method in the
virNetClient code, since this logic doesn't really belong in
the virNetSocket code.
Note that the this change means the shell snippet is passed to
the SSH binary as a single arg, instead of three separate args,
but this is functionally identical, as the three separate args
were combined into one already when passed to the remote system.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The changed condition was always false because the function was always
called with boundary values 0.
Use the free extent's start value to get its start offset from the
cylinder boundary and determine if the needed size for allocation
needs to be expanded too in case the offset doesn't fit within extra
bytes for alignment.
This fixes an issue where vol-create-from will call qemu-img convert
to create a destination volume of same capacity as the source volume
and qemu-img will error 'Cannot grow device files' due to the partition
being too small for the source although both destination partition and
source volume have the same capacity.
Signed-off-by: Sebastian Mitterle <smitterl@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add some expanded examples for the nat ipv6 introduced with
927acaedec.
Unfortunately while for IPv4 it's well-known what addresses ranges are
useful for NAT, with IPv6 unless you enjoy digging through RFC's going
back-and-forth over unique local addresses and the meaning of the word
"site" it's generally much less obvious. I've tried to add some
details on choosing a range inline with RFC 4193 and then some
pointers for when it maybe doesn't work in the guest as you first
expect despite you doing what the RFC's say!
Signed-off-by: Ian Wienand <iwienand@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When closing client->waitDispatch in virNetClientIOEventLoopRemoveAll
or virNetClientIOEventLoopRemoveDone, VIR_FREE() is called to free
call->msg directly, resulting in leak of the memory call->msg->buffer
points to.
Use virNetMessageFree(call->msg) instead of VIR_FREE(call->msg).
Signed-off-by: Hao Wang <wanghao232@huawei.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
In 8e1804f9f6 I've tried to fix the following use case: domain
is started with path to UEFI only and relies on libvirt to figure
out corresponding NVRAM template to create a per-domain copy
from. The fix consisted of having a check tailored exactly for
this use case and if it's hit then using FW autoselection to
figure it out. Unfortunately, the NVRAM template is not saved in
the inactive XML (well, the domain might be transient anyway).
Then, as a part of that check we see whether the per-domain copy
doesn't exist already and if it does then no template is looked
up hence no template will appear in the live XML.
This works, until the domain is migrated. At the destination, the
per-domain copy will not exist so we need to know the template to
create the per-domain copy from. But we don't even get to the
check because we are not starting a fresh new domain and thus the
qemuFirmwareFillDomain() function quits early.
The solution is to switch order of these two checks. That is
evaluate the check for the old style before checking flags.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1852910
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The changes for sparse stream support started passing
virshStreamCallbackDataPtr to virshStreamSink
instead of passing a simple file descriptor, but
forgot to adjust all the callers.
Fix it in cmdScreenshot as well.
https://bugzilla.redhat.com/show_bug.cgi?id=1875195
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 9e745a9717
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The call to `g_strfreev` is not required, as in both cases no memory has been allocated.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Using g_autoptr() in virCPUDef pointers allows for more
cleanups in ppc64Compute() and virCPUppc64Baseline()
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This allows for a label removal in ppc64ModelParse().
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
We don't need to call virCPUppc64DataFree() in a cleanup label.
This function is already assigned to the 'dataFree' interface
of cpuDriverPPC64, and it will be called by virCPUDataFree(), the
autocleanup function of virCPUDataPtr, via driver->dataFree.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Use autocleanup with virCPUppc64MapPtr to simplify existing
code. Remove labels when possible.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Next patch will use g_autoptr() in virCPUppc64MapPtr pointers
for some cleanups.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Introduce virCPUppc64Map and virCPUppc64MapPtr types to
improve code readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Use autocleanup with virCPUppc64ModelPtr to simplify existing
code. Remove the 'error' label in ppc64ModelCopy() since it is
now obsolete.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Next patch will use g_autoptr() in virCPUppc64ModelPtr pointers
for some cleanups.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Introduce virCPUppc64Model and virCPUppc64ModelPtr types to
improve code readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Use g_autoptr() in virCPUppc64VendorPtr and remove the now
uneeded 'cleanup' label.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Next patch will use g_autoptr() in virCPUppc64VendorPtr pointers
for some cleanups.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Introduce virCPUppc64Vendor and virCPUppc64VendorPtr types to
improve code readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The correct key for dependencies for virt_modules hash is `deps`.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
g_regex_unref reports an error if called with a NULL argument.
We have two cases in the code where we (possibly) call it on a NULL
argument. The interesting one is in virDomainQemuMonitorEventCleanup.
Based on VIR_CONNECT_DOMAIN_QEMU_MONITOR_EVENT_REGISTER_REGEX, we unref
data->regex, which has two problems:
* On the client side, flags is -1 so the comparison is true even if no
regex was used, reproducible by:
$ virsh qemu-monitor-event --timeout 1
which results in an ugly error:
(process:1289846): GLib-CRITICAL **: 14:58:42.631: g_regex_unref: assertion 'regex != NULL' failed
* On the server side, we only create the regex if both the flag and the
string are present, so it's possible to trigger this message by:
$ virsh qemu-monitor-event --regex --timeout 1
Use a non-NULL comparison instead of the flag to decide whether we need
to unref the regex. And add a non-NULL check to the unref in the
VirtualBox test too.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 71efb59a4dhttps://bugzilla.redhat.com/show_bug.cgi?id=1876907
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Even though this was brought up in upstream discussion [1] it
missed my patches: users should prefer <oemStrings/> over fwcfg.
The reason is that fwcfg is considered somewhat internal to QEMU
and it has limited number of slots and neither of these applies
to <oemStrings/>.
While I'm at it, I'm fixing the example too (because it contains
incorrect element name) and clarifying sysfs/ exposure.
1: https://www.redhat.com/archives/libvir-list/2020-May/msg00957.html
Reported-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The 'readline' package only contains the library, which rpm is
already generating the (stricter) correct dependency for.
Signed-off-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When starting a domain with <numatune/> set libvirt translates
given NUMA nodes into a set of host CPUs which is then used to
QEMU process affinity. But, if the numatune contains a
non-existent NUMA node then the translation fails with no error
reported. This is because virNumaNodesetToCPUset() calls
virNumaGetNodeCPUs() and expects it to report an error on
failure. Well, it does except for non-existent NUMA nodes. While
this behaviour might look strange it is actually desired because
of how we construct host capabilities. The virNumaGetNodeCPUs()
is called from virCapabilitiesHostNUMAInitReal() where we do not
want any error reported for non-existent NUMA nodes.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1724866
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
A wireshark plugin must declare what major and minor version it
was built with as these are checked when wireshark loads plugins.
On the top of that, we use major + minor + micro to adapt to
changed API between releases. So far, we were getting these
version numbers from wireshark/config.h.
And while most distributions install wireshark/config.h file some
don't. On distros shipping it it's hack^Wsaved during built by
packaging system and installed later. But some distros are not
doing that. At least not for new enough wireshark because as of
wireshark's commit v2.9.0~1273 the ws_version.h is installed
which contains the version macros we need and is installed by
wireshark itself.
But of course, some distros which have new enough wireshark
packaged do not ship ws_version.h and stick to the hack. That is
why we can't simply bump the minimal version and switch to the
new header file. We need a configure check and adopt our code to
deal with both ways. At least for the time being.
Based on Andrea's original patch:
https://www.redhat.com/archives/libvir-list/2020-September/msg00156.html
Closes: https://gitlab.com/libvirt/libvirt/-/issues/74
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
When starting a domain, qemuProcessLaunch() iterates over all
VIR_PERF_EVENT_* values and (possibly) enables them. While there
is nothing wrong with the code, the for loop where it's done makes
it harder to jump onto next block of code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Propagate the cluster size from the original image as the user might
have configured a custom cluster size for performance reasons. Propagate
the cluster size of a qcow2 image to the new overlay or copy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
'blockdev-create' allows us to create the image with a custom cluster
size if we wish to. Wire it up for 'qcow2'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Configuring the cluster size of an image may have performance
implications. This patch allows us to detect cluster size for existing
images so that we will be able to propagate it to new images which are
based on existing images e.g. during snapshots/block-copy/etc.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Incremental backups are not enabled. There's no point documenting
individual patches implementing an incomplete feature.
This reverts commit e6285f84fa
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
When building and populating domain NS a couple of functions are
called that append paths to a string list. This string list is
then inspected, one item at the time by
qemuNamespacePrepareOneItem() which gathers all the info for
given path (stat buffer, possible link target, ACLs, SELinux
label) using qemuNamespaceMknodItemInit(). If the path needs to
be created in the domain's private /dev then it's added onto this
qemuNamespaceMknodData list which is freed later in the process.
But, if the path does not need to be created in the domain's
private /dev, then the memory allocated by
qemuNamespaceMknodItemInit() is not freed anywhere leading to a
leak.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is just a clean-up of commit 3791f29b08 using the new parameter of
virProcessSetAffinity() introduced in commit 9514e24984 so that there is
no error reported in the logs.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In the past we had to declare @cfg and then explicitly unref it.
But now, with glib we can use g_autoptr() which will do the unref
automatically and thus is more bulletproof.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
In the qemuInterfacePrepareSlirp() function, the qemu driver
config is obtained (via virQEMUDriverGetConfig()), but it is
never unrefed leading to mangled refcounter.
Fixes: 9145b3f1cc
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
On shutdown we just stop accepting new jobs for worker thread so that on
shutdown wait we can exit worker thread faster. Yes we basically stop
processing of events for VMs but we are going to do so anyway in case of daemon
shutdown.
At the same time synchronous event processing that some API calls may require
are still possible as per VM event loop is still running and we don't need
worker thread for synchronous event processing.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
We are dropping the only reference here so that the event loop thread
is going to be exited synchronously. In order to avoid deadlocks we
need to unlock the VM so that any handler being called can finish
execution and thus even loop thread be finished too.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
It it useful to be sure no thread is running after we drop all references to
virEventThread. Otherwise in order to avoid crashes we need to synchronize some
other way or we make extra references in event handler callbacks to all the
object in use. And some of them are not prepared to be refcounted.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This hunk was introduced in [1] in order to avoid loosing
events from monitor on stopping qemu process. But as explained
in [2] on destroy we won't get neither EOF nor any other
events as monitor is just closed. In case of crash/shutdown
we won't get any more events as well and qemuDomainObjStopWorker
will be called by qemuProcessStop eventually. Thus let's
remove qemuDomainObjStopWorker from qemuProcessHandleMonitorEOF
as it is not useful anymore.
[1] e6afacb0f: qemu: start/stop an event loop thread for domains
[2] d2954c072: qemu: ensure domain event thread is always stopped
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
