We are currently parsing only rx/frames/max because that's the only
value that makes sense for us.  The tun device just added support for
this one and the others are only supported by hardware devices which
we don't need to worry about as the only way we'd pass those to the
domain is using <hostdev/> or <interface type='hostdev'/>.  And in
those cases the guest can modify the settings itself.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

That function is able to configure coalesce settings for an interface,
similarly to 'ethtool -C'.  This function also updates back the
structure so that it contains actual data on the device (if the device
doesn't support some settings kernel might just return 0 and not set
whatever is not supported), so this way we'll have up-to-date
information in the live domain XML.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Reported by Rafał Wojciechowski <it@rafalwojciechowski.pl>.

Thread 1 (Thread 0x7f194b99d700 (LWP 5631)):
0  virNetDevGetifaddrsAddress (addr=0x7f194b99c7c0, ifname=0x7f193400e2b0 "ovirtmgmt") at util/virnetdevip.c:738
1  virNetDevIPAddrGet (ifname=0x7f193400e2b0 "ovirtmgmt", addr=addr@entry=0x7f194b99c7c0) at util/virnetdevip.c:795
2  0x00007f19467800d6 in networkGetNetworkAddress (netname=<optimized out>, netaddr=netaddr@entry=0x7f1924013f18) at network/bridge_driver.c:4780
3  0x00007f193e43a33c in qemuProcessGraphicsSetupNetworkAddress (listenAddr=0x7f19340f7650 "127.0.0.1", glisten=0x7f1924013f10) at qemu/qemu_process.c:4062
4  qemuProcessGraphicsSetupListen (vm=<optimized out>, graphics=0x7f1924014f10, cfg=0x7f1934119f00) at qemu/qemu_process.c:4133
5  qemuProcessSetupGraphics (flags=17, vm=0x7f19240155d0, driver=0x7f193411f1d0) at qemu/qemu_process.c:4196
6  qemuProcessPrepareDomain (conn=conn@entry=0x7f192c00ab50, driver=driver@entry=0x7f193411f1d0, vm=vm@entry=0x7f19240155d0, flags=flags@entry=17) at qemu/qemu_process.c:4969
7  0x00007f193e4417c0 in qemuProcessStart (conn=conn@entry=0x7f192c00ab50, driver=driver@entry=0x7f193411f1d0, vm=0x7f19240155d0,asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_START, migrateFrom=migrateFrom@entry=0x0, migrateFd=migrateFd@entry=-1, migratePath=migratePath@entry=0x0,snapshot=snapshot@entry=0x0, vmop=vmop@entry=VIR_NETDEV_VPORT_PROFILE_OP_CREATE, flags=17, flags@entry=1) at qemu/qemu_process.c:5553

Man page for getifaddrs also states that the "ifa_addr" may contain
a null pointer which happens if there is an existing network interface
on the host without IP address.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

libvirtd can spawn threads/tasks when creating new domains for
some hypervisors such as Xen's libxl driver, quickly reaching
the cgroups pids controller default TasksMax setting of 512. When
the limit is reached, attempting to create additional domains
results in an error from the cgroups pids controller, e.g.

kernel: [71282.213347] cgroup: fork rejected by pids controller in
/system.slice/libvirtd.service

Depending on domain type and configuration, anywhere from 4-7
threads/tasks may be created by libxl when starting a domain.
In order to support 4096 domains, similar to commit 27cd7635,
increase the TasksMax setting in libvirtd.service to
4096 * 8 = 32768 tasks.

In the RPC client event loop code, if poll() returns only a POLLHUP
or POLLERR status, then we end up reporting a bogus error message:

  error: failed to connect to the hypervisor
  error: An error occurred, but the cause is unknown

We do actually report an error, but we virNetClientMarkClose method
has already captured the error status before we report it, so the
real error gets thrown away. The key fix is to report the error
before calling virNetClientMarkClose(). In changing this, we also
split out reporting of POLLHUP vs POLLERR to make any future bugs
easier to diagnose.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

In the vcpu hotplug code if exit from the monitor failed we would still
attempt to save the status XML. When the daemon is terminated the
monitor socket is closed. In such case, the written status XML would not
contain the monitor path and thus be invalid.

Avoid this issue by only saving status XML on success of the monitor
command.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1439452

The function is used only in the hotplug module.

The history of USB controller for ppc64 guest is complex and goes
back to libvirt 1.3.1 where the fun started.

Prior Libvirt 1.3.1 if no model for USB controller was specified
we've simply passed "-usb" on QEMU command line.

Since Libvirt 1.3.1 there is a patch (8156493d) that fixes this
issue by using "-device pci-ohci,..." but it breaks migration with
older Libvirts which was agreed that's acceptable.  However this
patch didn't reflect this change in the domain XML and the model
was still missing.

Since Libvirt 2.2.0 there is a patch (f55eaccb) that fixes the
issue with not setting the USB model into domain XML which we need
to know about to not break the migration and since the default
model was *pci-ohci* it was used as default in this patch as well.

This patch tries to take all the previous changes into account and
also change the default for newly defined domains that don't specify
any model for USB controller.

The VIR_DOMAIN_DEF_PARSE_ABI_UPDATE is set only if new domain is
defined or new device is added into a domain which means that in
all other cases we will use the old *pci-ohci* model instead of the
better and not broken *nec-usb-xhci* model.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1373184Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

So far there is probably no change that is allowed to be done
by the VIR_DOMAIN_DEF_PARSE_ABI_UPDATE flag that would break
guest ABI but this may change in the future.

This introduces new VIR_DOMAIN_DEF_PARSE_ABI_UPDATE_MIGRATION
which should be used only for ABI updates that are "safe" for
persistent migration.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

With QEMU older than 2.9.0 libvirt uses CPUID instruction to determine
what CPU features are supported on the host. This was later used when
checking compatibility of guest CPUs. Since QEMU 2.9.0 we ask QEMU for
the host CPU data. But the two methods we use usually provide disjoint
sets of CPU features because QEMU/KVM does not support all features
provided by the host CPU and on the other hand it can enable some
feature even if the host CPU does not support them.

So if there is a domain which requires a CPU features disabled by
QEMU/KVM, libvirt will refuse to start it with QEMU > 2.9.0 as its guest
CPU is incompatible with the host CPU data we got from QEMU. But such
domain would happily start on older QEMU (of course, the features would
be missing the guest CPU). To fix this regression, we need to combine
both CPU feature sets when checking guest CPU compatibility.

https://bugzilla.redhat.com/show_bug.cgi?id=1439933Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Sometimes we want to call virCPUGetHost only when it is implemented for
a given architecture to avoid logging expected and possibly misleading
errors. The new virCPUGetHostIsSupported API may be used to guard such
calls to virCPUGetHost.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Because of the changes done in the previous commit, @host is already a
migratable CPU and there's no need to do any additional filtering.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

We already know from QEMU which CPU features will block migration. Let's
use this information to make a migratable copy of the host CPU model and
use it for updating guest CPU specification. This will allow us to drop
feature filtering from virCPUUpdate where it was just a hack.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Soon we will need to store multiple host CPU definitions in
virQEMUCapsHostCPUData and qemuCaps users will want to request the one
they need. This patch introduces virQEMUCapsHostCPUType enum which will
be used for specifying the requested CPU definition.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

We need to store several CPU related data structure for both KVM and
TCG. So instead of keeping two different copies of everything let's
make a virQEMUCapsHostCPUData struct and use it twice.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

To keep freeing of host CPU data in one place.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

This introduces virQEMUCapsHostCPUDataCopy which will later be
refactored a bit and called twice from virQEMUCapsNewCopy.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

A simple helper as a complement to virQEMUCapsGetHostModel.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

There are several functions in virshInit which can fail, especially
when running win32 builds under WINE. Currently virsh just exits
without reporting what error happened.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

This travis configuration tests libvirt builds on 5 platforms that we don't
exercise in the CentOS CI system.

  - Ubuntu Trusty with GCC
  - Ubuntu Trusty with CLang
  - Ubuntu Precise with GCC
  - Ubuntu Precise with CLang
  - OS-X with CLang

NB, syntax-check fails on OS-X with errors like:

   /bin/sh: /usr/bin/grep: Argument list too long

Presumably their grep impl isn't as good as the GNU one, so this test
config skips syntax-check on OS-X for now.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Apple have annotated all SASL functions as deprecated for
unknown reasons. Since they still work, lets just ignore
the warnings. If Apple finally delete the SASL functions
our configure check should already catch that
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

If building libvirt against Ubuntu precise, the librbd.h is lacking
many functions that libvirt expects. We have no version check, so
we were enabling RBD even though it cannot compile. This configure
check uses existance of 'rbd_get_features' as an identifier for the
min required version.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

When running tests in a restricted container (as opposed to a full
OS install), we can't assume ebtables/iptbles/ip6tables are going
to be installed. We must check this and mark the tests as skipped.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

CLang's optimizer is more aggressive at inlining functions than
gcc and so will often inline functions that our tests want to
mock-override. This causes the test to fail in bizarre ways.

We don't want to disable inlining completely, but we must at
least prevent inlining of mocked functions. Fortunately there
is a 'noinline' attribute that lets us control this per function.

A syntax check rule is added that parses tests/*mock.c to extract
the list of functions that are mocked (restricted to names starting
with 'vir' prefix). It then checks that src/*.h header file to
ensure it has a 'ATTRIBUTE_NOINLINE' annotation. This should prevent
use from bit-rotting in future.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

/etc/libvirt/nwfilter/*.xml files are installed with no UUID, which
means libvirtd will automatically alter all of them once it starts. Thus
RPM verification will always fail on them. Let's use a trick similar to
the default network XML and store nwfilter XMLs in /usr/share. They will
be copied into /etc in %post. Additionally the /etc files are marked as
%ghost so that they are uninstalled if the RPM package is removed.

Note that the %post script overwrites existing files with new ones on
upgrade, which is what has always been happening.

https://bugzilla.redhat.com/show_bug.cgi?id=1431581
https://bugzilla.redhat.com/show_bug.cgi?id=1378774Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Use "virNetworkObj" as a prefix for any external API in virnetworkobj.

Also a couple of functions were local to virnetworkobj.c, so remove their
external defs in virnetworkobj.h.

Rename the API to be a better description of what it does. Besides, a
subsequent patch will rename virNetworkAssignDef to virNetworkObjAssignDef
so rather than make that patch confusing we'll take the intermittent step
in this patch.

In an effort to be consistent with the source module, alter the function
prototypes to follow the similar style of source with the "type" on one
line followed by the function name and arguments on subsequent lines with
with argument getting it's own line.

Alter the format of the code to follow more recent style guidelines of
two empty lines between functions, function decls with "[static] type"
on one line followed by function name with arguments to functions each
on one line.

Move all the virNetworkObj related API/data structures into their own
modules virnetworkobj.{c,h} from the network_conf.{c,h}

Purely code motion at this point plus adjustments to cleanly build

When hyperv code generator for WMI classes identifies common
properties, it needs to take into account array type as a distinct
type, i.e string != string[]. This is the case where v1 of the
Msvm_VirtualSystemSettingData has Notes property as string whereas v2
uses Notes[], therefore they have to be treated as different fields and
cannot be placed in the "common" struct.

Fix xlconfig channel tests when OOM testing is enabled.

TEST: xlconfigtest
32) Xen XL-2-XML Format channel-unix                                  ... OK
    Test OOM for nalloc=55 ................................................*** Error in `/home/jfehlig/virt/upstream/libvirt/tests/.libs/xlconfigtest': double free or corruption (fasttop): 0x0000000000679550 ***
...
(gdb) bt
#0  0x00007ffff36875af in raise () from /lib64/libc.so.6
#1  0x00007ffff36889aa in abort () from /lib64/libc.so.6
#2  0x00007ffff36c5150 in __libc_message () from /lib64/libc.so.6
#3  0x00007ffff36cb4f6 in malloc_printerr () from /lib64/libc.so.6
#4  0x00007ffff36cbcee in _int_free () from /lib64/libc.so.6
#5  0x00007ffff782babf in virFree (ptrptr=0x7fffffffdca8) at util/viralloc.c:582
#6  0x000000000042f2f3 in xenParseXLChannel (conf=0x677350, def=0x6815b0) at xenconfig/xen_xl.c:788
#7  0x000000000042f44e in xenParseXL (conf=0x677350, caps=0x6832b0, xmlopt=0x67f6e0) at xenconfig/xen_xl.c:828
#8  0x00000000004105a3 in testCompareFormatXML (
    xlcfg=0x6811e0 "/home/jfehlig/virt/upstream/libvirt/tests/xlconfigdata/test-channel-unix.cfg",
    xml=0x681110 "/home/jfehlig/virt/upstream/libvirt/tests/xlconfigdata/test-channel-unix.xml", replaceVars=false)
    at xlconfigtest.c:152

When a channel is successfully parsed and its path and name fields
assigned from local variables, set the local variables to NULL to
prevent a double free on error.
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1441964Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Introduce new wrapper functions without *Machine* in the function
name that take the whole virDomainDef structure as argument and
call the existing functions with *Machine* in the function name.

Change the arguments of existing functions to *machine* and *arch*
because they don't need the whole virDomainDef structure and they
could be used in places where we don't have virDomainDef.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Since the disks are copied by qemu, there's no need to enforce
cache=none. Thankfully the code that added qemuMigrateDisk did not break
existing configs, since if you don't select any disk to migrate
explicitly the code behaves sanely.

The logic for determining whether a disk should be migrated is
open-coded since using qemuMigrateDisk twice would be semantically
incorrect.

Acked-by: NNikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Signed-off-by: NKonstantin Neumoin <kneumoin@virtuozzo.com>