This way we get reference counting and we can get rid of locking
function.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Currently Libvirt allows attempts to migrate read only disks. Qemu
cannot handle this as read only disks cannot be written to on the
destination system. The end result is a cryptic error message and a
failed migration.

This patch causes migration to fail earlier and provides a meaningful
error message stating that migrating read only disks is not supported.
Signed-off-by: NCorey S. McQuay <csmcquay@linux.vnet.ibm.com>
Reviewed-by: NJason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

Rather than multiplying sockets, cores, and threads use the new helper
for getting the vcpu count resulting from the topology.

Make sure that the topology results into a sane number of cpus (up to
UINT_MAX) so that it can be sanely compared to the vcpu count of the VM.

Additionally the helper added in this patch allows to fetch the total
number the topology results to so that it does not have to be
reimplemented later.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1378290

Since it's only used in loop - just go direct.

If not initialized and the virAsprintf to jsonreply or fulllablel fails,
then the call to qemuMonitorTestFree will take stack data.

1. Move the declaration of const vshCmdDef *help - it should be at the
   top of the "if" rather than in the middle.

2. Change a comparison from && to || - without doing so we could crash
   on commands like 'virsh list' which would allow completion of some
   non -- option based on whatever was found in the current working
   directory and then as soon as that was completed, the next <tab>
   would crash since "opt" would be returned as NULL, but the check
   was dereferencing "&& opt->type"

3. Before dereferencing opt->completer, be sure opt isn't NULL.

In both virLogParseOutput and virLogParseFilter, rather than returning
NULL, goto cleanup since it's possible that for each the first condition
passes, but the || condition doesn't and thus we leak memory.

Yet another case of not needing virGetLastError processing

Remove the !size check since size is initialized to NULL and thus
causing the condition to always be true

The dnsmasq man page recommends that dhcp-authoritative "should be
set when dnsmasq is definitely the only DHCP server on a network".
This is the case for libvirt-managed virtual networks.

The effect of this is that VMs that fail to renew their DHCP lease
in time (e.g. if the VM or host is suspended) will be able to
re-acquire the lease even if it's expired, unless the IP address has
been taken by some other host. This avoids various annoyances caused
by changing VM IP addresses.

Sometimes virObjectEventStateFlush can be called without timer (if the
last event was unregistered right when the timer fired).  There is a
check for timer == -1, but that triggers warning and other log messages,
which is unnecessary.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

With newer versions of libvirt Domain-0 is again visible in the list of
running guests but it should not be considered as a guest for shutdown
or suspend.

Signed-off-by Stefan Bader <stefan.bader@canonical.com>

The list file expects all guest UUIDs on the same line as the URI
which the guests run on. This does not happen when the list is
echo'ed in quotes. When stripping the quotes, newlines get transformed
into spaces. Without this, only the first guest on the list is actually
handled.

Based on a fix by Omar Siam <simar@gmx.net>

Bug-Ubuntu: http://bugs.launchpad.net/bugs/1591695Signed-off-by: NStefan Bader <stefan.bader@canonical.com>

Due to a missing entries in Makefile, we were not distributing
all the systemtap scripts we have.
Signed-off-by: NLuyao Huang <lhuang@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Handling of outputs and filters has been changed in a way that splits
parsing and defining. Do the same thing for logging priority as well, this
however, doesn't need much of a preparation.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

This is mainly virLogAddOutputTo* which were replaced by virLogNewOutputTo* and
the previously poorly named ones virLogParseAndDefine* functions. All of these
are unnecessary now, since all the original callers were transparently switched
to the new model of separate parsing and defining logic.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Similar to outputs, parser should do parsing only, thus the 'define' logic
is going to be stripped from virLogParseAndDefineFilters by replacing calls to
this method to virLogSetFilters instead.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Since virLogParseAndDefineOutputs is going to be stripped from 'output defining'
logic, replace all relevant occurrences with virLogSetOutputs call to make the
change transparent to all original callers (daemons mostly).
Signed-off-by: NErik Skultety <eskultet@redhat.com>

This method will eventually replace virLogParseAndDefineFilters which
currently does both parsing and defining.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

This API is the entry point to output modification of the logger. Currently,
everything is done by virLogParseAndDefineOutputs. Parsing and defining will be
split into two operations both handled by this method transparently.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Abstraction added over parsing a single filter. The method parses potentially a
set of logging filters, while adding each filter logging object to a
caller-provided array.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Another abstraction added on the top of parsing a single logging output. This
method takes and parses the whole set of outputs, adding each single output
that has already been parsed into a caller-provided array. If the user-supplied
string contained duplicate outputs, only the last occurrence is taken into
account (all the others are removed from the list), so we silently avoid
duplicate logs.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Same as for outputs, introduce a new method, that is basically the same as
virLogParseAndDefineFilter with the difference that it does not define the
filter. It rather returns a newly created object that needs to be inserted into
a list and then defined separately.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Introduce a method to parse an individual logging output. The difference
compared to the virLogParseAndDefineOutput is that this method does not define
the output, instead it makes use of the virLogNewOutputTo* methods introduced
in the previous patch and just returns the virLogOutput object that has to be
added to a list of object which then can be defined as a whole via
virLogDefineOutputs. The idea remains still the same - split parsing and
defining of the logging primitives (outputs, filters).
Additionally, since virLogNewOutputTo* methods are now finally used,
ATTRIBUTE_UNUSED can be successfully removed from the methods' definitions,
since that was just to avoid compiler complaints about unused static functions.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Now that we're in the critical section, syslog connection can be re-opened
by issuing openlog, which is something that cannot be done beforehand, since
syslog keeps its file descriptor private and changing the tag earlier might
introduce a log inconsistency if something went wrong with preparing a new set
of logging outputs in order to replace the existing one.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Continuing with the effort to split output parsing and defining, these new
functions return a logging object reference instead of defining the output.
Eventually, these functions will replace the existing ones (virLogAddOutputTo*)
which will then be dropped.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Prepare a method that only defines a set of filters. It takes a list of
filters, preferably created by virLogParseFilters. The original set of filters
is reset and replaced by the new user-provided set of filters.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Prepare a method that only defines a set of outputs. It takes a list of
outputs, preferably created by virLogParseOutputs. The original set of outputs
is reset and replaced by the new user-provided set of outputs.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Outputs are a bit trickier than filters, since the user(config)-specified
set of outputs can contain duplicates. That would lead to logging the same
message twice. For compatibility reasons, we cannot just error out and forbid
the daemon to start if we find duplicate outputs which do not make sense.
Instead, we could silently take into account only the last occurrence of the
duplicate output and remove all the previous ones, so that the logger will not
try to use them when it is looping over all of its registered outputs.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

This method allocates a new filter object which it then returns back to caller.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

In order to later split output parsing and output defining, introduce a new
function which will create a new virLogOutput object which the parser will
insert into a list with the list being eventually defined.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

There is really no reason why we could not keep journald's fd within the
journald output object the same way as we do for regular file-based outputs.
By doing this we later won't have to special case the journald-based output
(due to the fd being globally shared) when replacing the existing set of outputs
with a new one. Additionally, by making this change, we don't need the
virLogCloseJournald routine anymore, plain virLogCloseFd will suffice.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Right now virLogParse* functions are doing both parsing and defining of filters
and outputs which should be two separate operations. Since the naming is
apparently a bit poor this patch renames these functions to
virLogParseAndDefine* which eventually will be replaced by virLogSet*.
Additionally, virLogParse{Filter,Output} will be later (after the split) reused,
so that these functions do exactly what the their name suggests.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

During first stage of virlog.c refactor, commit 0b231195 forgot to remove the
macro definition along with its usage.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

For one VM, it could had more than one graphical display.
Such as we coud add both vnc and spice display to a VM.

This patch introduces '--all' for showing all
possible graphical display of a active VM.
Signed-off-by: NChen Hanxiao <chenhanxiao@gmail.com>
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>

If the event is already disabled, then don't bother with setting it
disabled again.  Causes unnecessary error on systems that don't support
the feature anyway.

Make it clearer that the perf event is based/for the host cpu and
use the virPerfEventTypeToString to convert the type to a string

https://bugzilla.redhat.com/show_bug.cgi?id=1381714

Alter the descriptions to match what the cpu_cycles actually is

The intel-iommu device has existed since QEMU 2.2.0, but
it was only possible to create it with -device since
QEMU 2.7.0, thanks to:

  commit 621d983a1f9051f4cfc3f402569b46b77d8449fc
  Author: Marcel Apfelbaum <marcel@redhat.com>
  Date:   Mon Jun 27 18:38:34 2016 +0300

    hw/iommu: enable iommu with -device

    Use the standard '-device intel-iommu' to create the IOMMU device.
    The legacy '-machine,iommu=on' can still be used.

The libvirt capability check & command line formatting code
is thus broken for all QEMU versions 2.2.0 -> 2.6.0 inclusive.

This fixes it to use iommu=on instead.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>