If we need to get a path of specific file and we need to check its
existence before we use it then we can reuse that path to get/set
values instead of calling the existing get/set value functions which
would be building the path again.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In some cases we report a low level error message which does not have
enough information to see what the problem is. To allow improving on
this add an API which will prefix the error message with another error
message string which can be used to describe where the error comes from.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
There are couple of functions which get shorter after the
treatment.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Couple of things happening in this patch:
1) We can mark the device we're adding onto active list as used
way before - when adding it onto temporary list.
2) When actually moving device from a temporary helper list onto
the list of active devices we check if the device isn't
already there. The same check is performed by
virSCSIVHostDeviceListAdd() later. Drop this duplicity.
3) The 'error' label is renamed to 'rollback' to reflect what it
is actually doing. While in the rest of the code we don't
allow random label names, this source file is different.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When looking up a USB device by vendor the
virUSBDeviceFindByVendor() is used. The function returns number
of items found. But the logic in caller to process it is
needlessly complicated.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are couple of functions which get shorter after the
treatment.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There's no need to translate virDomainHostdevDef-s into
virPCIDevice-s with locked list of PCI devices.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There's no need to translate virDomainHostdevDef-s into
virPCIDevice-s with locked list of PCI devices.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function is a good candidate for VIR_AUTOPTR() conversion.
But this conversion will be easier if we only add @pci device
onto @pcidevs list after it was all set up.
This is no functional change.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a new virNetworPort object that will present an attachment to
a virtual network from a VM.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When (un)plugging an interface into a network, the 'plugged'
and 'unplugged' operations are invoked in the hook script.
The data provided to the script contains the network XML, the
domain XML and the domain interface XML. When we strictly split the
drivers up this will no longer be possible and thus breakage is
unavoidable. The hook scripts are not considered to be covered by the
API guarantee so this is OK.
To avoid existing scripts taking the wrong action, the existing
operations are changed to 'port-created' and 'port-deleted'
instead. These will receive the network XML and the network port
XML.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When libvirtd is run inside a container it is normal that neither
systemd nor pm-utils will be available. In this case there is no way to
suspend the host, so libvirt should just report the feature unsupported
instead of raising an error.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Right now, if numad fails, we raise an error but return an
empty string to the caller instead of a NULL pointer, which
means processing will continue and the user will see
# virsh start guest
error: Failed to start domain guest
error: invalid argument: Failed to parse bitmap ''
instead of a more reasonable
# virsh start guest
error: Failed to start domain guest
error: operation failed: Failed to query numad for the advisory nodeset
Make sure the user gets a better error message.
https://bugzilla.redhat.com/show_bug.cgi?id=1716387
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This helper converts a set of NUMA node to the set of CPUs
they contain.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
On a KVM x86_64 host which supports invariant TSC this function can be
used to detect the TSC frequency and the availability of TSC scaling.
The magic MSR numbers required to check if VMX scaling is supported on
the host are documented in Volume 3 of the Intel® 64 and IA-32
Architectures Software Developer’s Manual.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1426162
Turns out, some aarch64 systems have SMBIOS info. That means we
can use dmidecode to fetch some information. If that fails, fall
back to the old behaviour.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
There's nothing x86 specific about this function. Rename the
function so that it has DMI suffix which enables it to be reused
on different arches (as using X86 from say ARM would look
suspicious).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Due to the way that our virObjectUnref() is written it's not
possible that a NULL is passed into *Dispose() function. However,
some functions check for that regardless.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
If an FD is passed into a child using:
virCommandPassFD(cmd, fd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
then the parent should refrain from touching @fd thereafter. This
is even documented in virCommandPassFD() comment. The reason is
that either at virCommandRun()/virCommandRunAsync() or
virCommandFree() time the @fd will be closed. Closing it earlier,
e.g. right after virCommandPassFD() call might result in
undesired results. Another thread might open a file and receive
the same FD which is then unexpectedly closed by virCommandFree()
or virCommandRun().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1710575
It may happen that the system where libvirt is built at doesn't
have udevadm binary but the one where it runs does have it.
If we change how udevadm is run in virWaitForDevices() then we
can safely pass a default value in m4 macro.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The udevsettle binary is no longer used anywhere as it was
replaced by 'udevadm settle'. There's no reason for us to even
check for it in configure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's not true that there is a backup loop. There isn't. Drop this
part of the comment to not confuse anybody.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The idea of virCommand* APIs is that a possible error that
occurred while constructing cmd line is kept in virCommand
struct. If that's the case all subsequent calls to virCommand*()
are NO-OPs or they return an error. Well,
virCommandPassFDGetFDIndex() is not honoring that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
