If the virStringSearch() returns a 0 (zero), then each of the uses
of the call will just jump to cleanup forgetting to free the returned
empty list. Expand the scope a bit of each use and free at cleanup.

The returned socks from virNetSocketNewListenTCP needs to be VIR_FREE'd
as well as seach of the Close/Unref on all the socks[i] that is
already done

The xend driver and the parsing/formating code in src/xenconfig
have long supported soundhw.  Add support in the libxl driver too.

https://bugzilla.redhat.com/show_bug.cgi?id=1176020

We had a check for the vcpu count total number in <numa>
before, however this check is not good enough. There are
some examples:

1. one of cpu id is out of maxvcpus, can set success(cpu count = 5 < 10):

<vcpu placement='static'>10</vcpu>
<cell id='0' cpus='0-3,100' memory='512000' unit='KiB'/>

2. use the same cpu in 2 cell, can set success(cpu count = 8 < 10):
<vcpu placement='static'>10</vcpu>
<cell id='0' cpus='0-3' memory='512000' unit='KiB'/>
<cell id='1' cpus='0-3' memory='512000' unit='KiB'/>

3. use the same cpu in 2 cell, cannot set success(cpu count = 11 > 10):
<vcpu placement='static'>10</vcpu>
<cell id='0' cpus='0-6' memory='512000' unit='KiB'/>
<cell id='1' cpus='0-3' memory='512000' unit='KiB'/>

Add a check for numa cpus, check if duplicate use one cpu in more
than one cell.
Signed-off-by: NLuyao Huang <lhuang@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

The only version that's supported in QEMU is version 2, currently.
Fortunately, it is enabled by aarch64 automatically, so there's
nothing for us that needs to be put onto command line.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Some platforms, like aarch64, don't have APIC but GIC. So there's
no reason to have <apic/> feature turned on. However, we are
still missing <gic/> feature. This commit introduces the feature
to XML parser and formatter, adds documentation and updates RNG
schema.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

When migrating a domain while changing its name and using
VIR_MIGRATE_PERSIST_DEST flag, libvirt would fail to properly change the
name in the persistent definition. The inconsistency results in weird
behavior when dumping domain XML, destroying the domain, restarting
libvirtd and likely in several other situations.

Since the new name is already stored in vm->def->name, we just need to
make sure the persistent definition uses this new name too.

https://bugzilla.redhat.com/show_bug.cgi?id=1076354Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Currently we try to chown any directory passed to virDirCreate,
even if the user didn't request any explicit owner/group via the
pool/vol XML.

This causes issues with qemu:///session: try to build a pool of
a root owned directory like /tmp, and it fails trying to chown the
directory to the session user. Instead it should just leave things
as they are, unless the user requests changing permissions via
the pool XML.

Similarly this is annoying if creating a storage pool via system
libvirtd of an existing directory in user $HOME, it's now owned
by root.

The virDirCreate function is pretty convoluted, since it needs to
fork off in certain specific cases. Try to document that, to make
it clear where exactly we are changing behavior.

The current code attempts to handle this, but it only catches mkdir
failing with EEXIST. However if say trying to build /tmp for an
unprivileged qemu:///session, mkdir will fail with EPERM.

Rather than catch any errors, just don't attempt mkdir if the directory
already exists.

This means pool XML actually reports accurate user/group/mode/label.

This uses UpdateVolTargetInfoFD in a bit of a hackish way, but it works

virDirCreate will give us fine grained details about what actually failed.

Neither migrate URI nor lister address make any sense for tunnelled
migration.

https://bugzilla.redhat.com/show_bug.cgi?id=1066375
https://bugzilla.redhat.com/show_bug.cgi?id=1073233Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Fill qemu command line vmport argument as required.

The vmport machine argument works with pc machine kind, not with xen for
example.

Move common functions being used by the following
virQEMUCapsSupportsVmport commit.

Set the capability based on qmp query, or qemu version.  The qmp query
includes vmport with 2.2, but no longer with 2.3. It lists only
non-machine specific capabilities, so check the qemu version too until a
machine-specific query is supported.

https://bugzilla.redhat.com/show_bug.cgi?id=1218145

Jump to endjob instead of cleanup to fix this deadlock.
Signed-off-by: NLuyao Huang <lhuang@redhat.com>

Now that we have macros for exclusive flags and flag requirements we can
use them to cleanup the code for setvcpus and error out for all wrong
flag combination.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

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

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

Similar to VIR_EXLUSIVE_FLAGS, it will error out if flag requirement is
not met.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Inspired by commit 7e437ee7 that introduced similar macros for virsh
commands so we don't have to repeat the same code all over.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

Found by Laine and discussed a bit on internal IRC.

Commit id c56fe7f1 added support for creating a command line to support
scsi-disk.channel.

Series was here:
http://www.redhat.com/archives/libvir-list/2012-February/msg01052.html

Which pointed to a design proposal here:
http://permalink.gmane.org/gmane.comp.emulators.libvirt/50428

Which states (in part):

Libvirt should check for the QEMU "scsi-disk.channel" property.  If it
is unavailable, QEMU will only support channel=lun=0 and 0<=target<=7.

However, the check added was ensuring that bus != lun *and* bus != 0. So
if bus == lun and both were non zero, we'd never make the second check.
Changing this to an *or* check fixes the check, but still is less readable
than the just checking each for 0

Since the qemu capabilities are not initialized for offline VMs the
caller might get suboptimal error message:

$ virsh blockjob VM PATH --bandwidth 1
error: unsupported configuration: block jobs not supported with this QEMU binary

Move the checks after we make sure that the VM is alive.

Only USB addresses are allowed for USB disks. Report an error if another
address is configured.

https://bugzilla.redhat.com/show_bug.cgi?id=1043436Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=858147Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Just as we allow stopping filesystem pools when they were unmounted
externally, do not fail to stop an iscsi pool when someone else
closed the session externally.

Reported at:
https://bugzilla.redhat.com/show_bug.cgi?id=1171984

Provide integration with libvirt's lock manager in the libxl driver.
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

The phyp driver stuffed it into a DomainDefPtr during its attachdevice
routine, but the value is never advertised via capabilities so it should
be safe to drop.

Have the phyp driver use OSTYPE_LINUX, which is what it advertises via
capabilities.

In qemuMigrationDriveMirror we can start all disk mirrors in parallel.
We wait until they are all ready, or one of them aborts.

In qemuMigrationCancelDriveMirror, we wait until all mirrors are
properly stopped. This is necessary to ensure that destination VM is
fully in sync with the (paused) source VM.

If a drive mirror can not be cancelled, then the destination is not in a
consistent state. In this case it is not safe to continue with the
migration.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>

The !modern code path needs to call qemuBlockJobEventProcess directly.
the modern code path will call it via qemuBlockJobSyncWait.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>

Other threads may be blocked in qemuBlockJobSyncWait. Ensure that
they're woken up when the domain is stopped.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>

qemuBlockJobSyncBegin and qemuBlockJobSyncEnd delimit a region of code
where block job events are processed "synchronously".
qemuBlockJobSyncWait and qemuBlockJobSyncWaitWithTimeout wait for an
event generated by a block job.

The Wait* functions may be called multiple times while the synchronous
block job is active. Any pending block job event will be processed by
only when Wait* or End is called.  disk->blockJobStatus is reset by
these functions, so if it is needed a pointer to a
virConnectDomainEventBlockJobStatus variable should be passed as the
last argument. It is safe to pass NULL if you do not care about the
block job status.

All functions assume the VM object is locked. The Wait* functions will
unlock the object for as long as they are waiting. They will return -1
and report an error if the domain exits before an event is received.

Typical use is as follows:

  virQEMUDriverPtr driver;
  virDomainObjPtr vm; /* locked */
  virDomainDiskDefPtr disk;
  virConnectDomainEventBlockJobStatus status;

  qemuBlockJobSyncBegin(disk);

  ... start block job ...

  if (qemuBlockJobSyncWait(driver, vm, disk, &status) < 0) {
      /* domain died while waiting for event */
      ret = -1;
      goto error;
  }

  ... possibly start other block jobs
      or wait for further events ...

  qemuBlockJobSyncEnd(driver, vm, disk, NULL);

To perform other tasks periodically while waiting for an event:

  virQEMUDriverPtr driver;
  virDomainObjPtr vm; /* locked */
  virDomainDiskDefPtr disk;
  virConnectDomainEventBlockJobStatus status;
  unsigned long long timeout = 500 * 1000ull; /* milliseconds */

  qemuBlockJobSyncBegin(disk);

  ... start block job ...

  do {
      ... do other task ...

      if (qemuBlockJobSyncWaitWithTimeout(driver, vm, disk,
                                          timeout, &status) < 0) {
          /* domain died while waiting for event */
          ret = -1;
          goto error;
      }
  } while (status == -1);

  qemuBlockJobSyncEnd(driver, vm, disk, NULL);
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>

We will want to use synchronous block jobs from qemu_migration as well,
so split this function out into a new source file.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>

While qemu would reject the configuration we can check whether it makes
sense to plug the device upfront.

slot id, if specified, has to be less than the slots count.

If the added memory device would exceed the maximum memory size, reject
it.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1216046

The documentation states that for shallow block copy the image has to
have the same guest visible content as backing file of the current
image if the file is being reused. This condition can be achieved also
with a raw file (or a qcow without a backing file) so remove the
condition that would disallow it.

(This patch additionally fixes crash described in
 https://bugzilla.redhat.com/show_bug.cgi?id=1215569 )

New functions utilize previosly added prlsdkDelDisk and prlsdkGetDiskIndex
Signed-off-by: NMaxim Nestratov <mnestratov@parallels.com>