Let's keep all run time validation of cached QEMU capabilities in
virQEMUCapsIsValid and call it whenever we access the cache.
virQEMUCapsInitCached should keep only the checks which do not make
sense once the cache is loaded in memory.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

virQEMUCapsLoadCache loads QEMU capabilities from a file, but strangely
enough it returns the loaded QEMU binary ctime in qemuctime parameter
instead of storing it in qemuCaps.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

This fixes a build issue with old gnutls.
Broken by commit 680d2f49.
Reported-by: NOlga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

So far, the main code is built in parallel, which makes it pretty
fast. But with a lots of tests we have now I've noticed this part
takes too much time to build. The problem was that tests were
build and run in a single job.

Also, 'make' in the first hunk is useless. The test suite is not
built due to 'make all' because there's no .git in the sources
unpacked from a tar.xz archive. It's 'make check' which triggers
tests build.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

 On BSD family OSes (Free/Net/Open/DragonFlyBSD, Mac OS) and
 Solaris loopback interface is called 'lo0' instead of just 'lo'.

This is needed in order to migrate a domain with shmem devices as that
is not allowed to migrate.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

QEMU added support for ivshmem-plain and ivshmem-doorbell.  Those are
reworked varians of legacy ivshmem that are compatible from the guest
POV, but not from host's POV and have sane specification and handling.

Details about the newer device type can be found in qemu's commit
5400c02b90bb:

  http://git.qemu.org/?p=qemu.git;a=commit;h=5400c02b90bbSigned-off-by: NMartin Kletzander <mkletzan@redhat.com>

We're keeping some things at default and that's not something we want to
do intentionally.  Let's save some sensible defaults upfront in order to
avoid having problems later.  The details for the defaults (of the newer
implementation) can be found in qemu's commit 5400c02b90bb:

  http://git.qemu.org/?p=qemu.git;a=commit;h=5400c02b90bb

Since we are merely saving the defaults it will not change the guest ABI
and thanks to the fact that we're doing it in the PostParse callback it
will not break the ABI stability checks.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

The old ivshmem is deprecated in QEMU, so let's use the better
ivshmem-{plain,doorbell} variants instead.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Just the default one now, new ones will be added in following commits.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Unlike other migration capabilities, post-copy is also set on the
destination host which means it doesn't disappear once domain is
migrated. As a result of that other functionality which internally uses
migration to a file (virDomainManagedSave, virDomainSave,
virDomainCoreDump) may fail after migration because the post-copy
capability is still set.

https://bugzilla.redhat.com/show_bug.cgi?id=1374718Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Commit d8a8af34 changed the minimal required version of gnutls
so it's safe to remove the code for older versions.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

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

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

* docs/news.html.in: update for the release
* po/*.po*: regenerated

The library.xen file contains a braindump of thoughts dating
from the very first days of libvirt, when it was briefly
called libxen. This is not useful and potentially misleading
or confusing for people.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Commit id 'dcfdf341' passes 'opts_need_arg' and 'opts_seen' to
vshCmddefGetData, but that seems to be incorrect as those values
are not initialized properly (something at least one compiler found).
Instead the static 'const_opts_need_arg' and 'const_opts_seen' values
should be passed.

By passing unitialized values leads to not finding possible options
for simpler commands (domfsfreeze for example), where if you're in
a virsh shell using command line completion - you'll get a list of
files in your current directory instead of two options --domain and
--mountpoint (as would happen with this patch applied.

Correcting the error reporting method by using VSH_REQUIRE_OPTION
instead of virReportError
Signed-off-by: NKothapally Madhu Pavan <kmp@linux.vnet.ibm.com>

commit 9065cfaa added the ability to disable DNS services for a
libvirt virtual network. If neither DNS nor DHCP is needed for a
network, then we don't need to start dnsmasq, so code was added to
check for this.

Unfortunately, it was written with a great lack of attention to detail
(I can say that, because I was the author), and the loop that checked
if DHCP is needed for the network would never end if the network had
multiple IP addresses and the first <ip> had no <dhcp> subelement
(which would have contained a <range> or <host> subelement, thus
requiring DHCP services).

This patch rewrites the check to be more compact and (more
importantly) finite.

This bug was present in release 2.2.0 and 2.3.0, so will need to be
backported to any relevant maintainence branches.

Reported here:
  https://www.redhat.com/archives/libvirt-users/2016-October/msg00032.html
  https://www.redhat.com/archives/libvirt-users/2016-October/msg00045.html

If we failed to unlink old dom cfg file, we goto rollback.
But inside rollback, we fogot to unlink the new dom cfg file.
This patch fixes this issue.
Signed-off-by: NChen Hanxiao <chenhanxiao@gmail.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Whilst working on another issue, I've noticed that in some
functions we have a local @driver variable among with access to
global @qemu_driver variable. This makes no sense.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Rather than waiting until we've free'd up all the resources, cause the
'workerPool' thread pool to flush as soon as possible during stateCleanup.
Otherwise, it's possible something waiting to run will SEGV such as is the
case during race conditions of simultaneous exiting libvirtd and qemu process.
Resolves the following crash:

[1] crash backtrace: (bt is shortened a bit):

0  0x00007ffff7282f2b in virClassIsDerivedFrom
   (klass=0xdeadbeef, parent=0x55555581d650) at util/virobject.c:169
1  0x00007ffff72835fd in virObjectIsClass
   (anyobj=0x7fffd024f580, klass=0x55555581d650) at util/virobject.c:365
2  0x00007ffff7283498 in virObjectLock
   (anyobj=0x7fffd024f580) at util/virobject.c:317
3  0x00007ffff722f0a3 in virCloseCallbacksUnset
   (closeCallbacks=0x7fffd024f580, vm=0x7fffd0194db0,
    cb=0x7fffdf1af765 <qemuProcessAutoDestroy>)
   at util/virclosecallbacks.c:164
4  0x00007fffdf1afa7b in qemuProcessAutoDestroyRemove
   (driver=0x7fffd00f3a60, vm=0x7fffd0194db0) at qemu/qemu_process.c:6365
5  0x00007fffdf1adff1 in qemuProcessStop
   (driver=0x7fffd00f3a60, vm=0x7fffd0194db0, reason=VIR_DOMAIN_SHUTOFF_CRASHED,
    asyncJob=QEMU_ASYNC_JOB_NONE, flags=0)
   at qemu/qemu_process.c:5877
6  0x00007fffdf1f711c in processMonitorEOFEvent
   (driver=0x7fffd00f3a60, vm=0x7fffd0194db0) at qemu/qemu_driver.c:4545
7  0x00007fffdf1f7313 in qemuProcessEventHandler
   (data=0x555555832710, opaque=0x7fffd00f3a60) at qemu/qemu_driver.c:4589
8  0x00007ffff72a84c4 in virThreadPoolWorker
   (opaque=0x555555805da0) at util/virthreadpool.c:167

Thread 1 (Thread 0x7ffff7fb1880 (LWP 494472)):
1  0x00007ffff72a7898 in virCondWait
   (c=0x7fffd01c21f8, m=0x7fffd01c21a0) at util/virthread.c:154
2  0x00007ffff72a8a22 in virThreadPoolFree
   (pool=0x7fffd01c2160) at util/virthreadpool.c:290
3  0x00007fffdf1edd44 in qemuStateCleanup ()
   at qemu/qemu_driver.c:1102
4  0x00007ffff736570a in virStateCleanup ()
   at libvirt.c:807
5  0x000055555556f991 in main (argc=1, argv=0x7fffffffe458) at libvirtd.c:1660

Do not dereference the 'dmn' until after the virStateCleanup is completed.

During initialization, virStateInitialize requires/uses the "dmn" as the
argument to/for the daemonInhibitCallback functions. Thus, cleanup cannot
dereference 'dmn' until after calling the virStateCleanup which calls the
the daemonInhibitCallback using 'dmn'; otherwise, the following crash occurs:

backtrace (shortened a bit)

1  0x00007fd3a791b2e6 in virCondWait (c=<optimized out>, m=<optimized out>)
   at util/virthread.c:154
2  0x00007fd3a791bcb0 in virThreadPoolFree (pool=0x7fd38024ee00)
   at util/virthreadpool.c:266
3  0x00007fd38edaa00e in qemuStateCleanup () at qemu/qemu_driver.c:1116
4  0x00007fd3a79abfeb in virStateCleanup () at libvirt.c:808
5  0x00007fd3a85f2c9e in main (argc=<optimized out>, argv=<optimized out>)
    at libvirtd.c:1660

Thread 1 (Thread 0x7fd38722d700 (LWP 32256)):
0  0x00007fd3a7900910 in virClassIsDerivedFrom
   (klass=0xdfd36058d4853, parent=0x7fd3a8f394d0) at util/virobject.c:169
1  0x00007fd3a7900c4e in virObjectIsClass
   (anyobj=anyobj@entry=0x7fd3a8f2f850, klass=<optimized out>)
   at util/virobject.c:365
2  0x00007fd3a7900c74 in virObjectLock (anyobj=0x7fd3a8f2f850)
   at util/virobject.c:317
3  0x00007fd3a7a24d5d in virNetDaemonRemoveShutdownInhibition
   (dmn=0x7fd3a8f2f850) at rpc/virnetdaemon.c:547
4  0x00007fd38ed722cf in qemuProcessStop
   (driver=driver@entry=0x7fd380103810, vm=vm@entry=0x7fd38025b6d0,
    reason=reason@entry=VIR_DOMAIN_SHUTOFF_SHUTDOWN,
    asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_NONE, flags=flags@entry=0)
   at qemu/qemu_process.c:5786
5  0x00007fd38edd9428 in processMonitorEOFEvent
   (vm=0x7fd38025b6d0, driver=0x7fd380103810) at qemu/qemu_driver.c:4588
6  qemuProcessEventHandler (data=<optimized out>, opaque=0x7fd380103810)
   at qemu/qemu_driver.c:4632
7  0x00007fd3a791bb55 in virThreadPoolWorker
   (opaque=opaque@entry=0x7fd3a8f1e4c0) at util/virthreadpool.c:145

It's funny, but Routed network name was incorrect. We should use
host-routed instead.

Recently, libprlsdk got a separate flag PNA_BRIDGE corresponding to
type=bridge libvirt network interfaces. Let's use it and get rid of
all workarounds previously added to  support it.
Signed-off-by: NMaxim Nestratov <mnestratov@virtuozzo.com>

We don't support cpu pinning for TCG domains because QEMU runs them in
one thread only.  But vcpupin command was able to set them, which
resulted in a failed startup, so make sure that doesn't happen.
Signed-off-by: NChen Hanxiao <chenhanxiao@gmail.com>

When starting a new domain, we allocate the USB addresses and keep
an address cache in the domain object's private data.

However this data is lost on libvirtd restart.

Also generate the address cache if all the addresses have been
specified, so that devices hotplugged after libvirtd restart
also get theirs assigned.

https://bugzilla.redhat.com/show_bug.cgi?id=1387666

Return 0 instead of 1, so that qemuDomainAttachChrDevice does not
assume the address neeeds to be released on error.

No functional change, since qemuDomainReleaseDeviceAddress has been a noop
for virtio serial addresses since the address cache was removed
in commit 19a148b7.

For domains with no USB address cache, we should not attempt
to generate a USB address.

https://bugzilla.redhat.com/show_bug.cgi?id=1387665

This function should never need a cleanup section.

This time do not require an address cache as a parameter.

Simplify qemuDomainAttachChrDeviceAssignAddr to not generate
the virtio serial address cache for devices of other types.

Partially reverts commit 925fa4b9.

Commit 19a148b7 dropped the cache from QEMU's private domain object.
Assume the callers do not have the cache by default and use
a longer name for the internal ones that do.

This makes the shorter 'virDomainVirtioSerialAddrAutoAssign'
name availabe for a function that will not require the cache.

The 'on_shutdown' was the name in Xen, there was never such option in
libvirt's domain XML.
Reported-by: NRuben Kerkhof <ruben@rubenkerkhof.com>
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

When user tries to resume already running domain (Qemu or LXC)
VIR_ERR_OPERATION_INVALID error should be raised with message that
domain is already running.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1009008

Since we're using autoconf to substitute the right value in
Makefile.am now, we can use a less generic name without running
into circular dependencies.

Adding $(prefix) in Makefile.am, as we were doing, means that
it would be prepended even when using --with-ws-plugindir,
which is something we don't want to happen.

Instead, we add it beforehand but take care that it doesn't
get expanded until make is called.

Even when we're building $plugindir ourselves because we can't
retrieve it using pkg-config, we still want to strip the prefix,
except in that case it would be the same prefix we're using for
building libvirt.

The fact that $plugindir is missing also doesn't tell us
anything about $ws_prefix, so we have to handle the two variables
separately.

Keep all variable declarations close together.