If a user hot-attaches the guest agent channel libvirt would ignore it
until the restart of libvirtd or shutdown/destroy and start of the VM
itself.

This patch adds code that opens or closes the guest agent connection
according to the state of the guest agent channel according to
connect/disconnect events.

To allow opening the channel from the event handler qemuConnectAgent
needed to be exported.

When the guest agent channel gets hotplugged to a VM, libvirt would
still report that "QEMU guest agent is not configured" rather than
stating that the connection was not established yet.

Currently the code won't be able to connect to the agent after hotplug
but that will change in a later patch.

As the qemuFindAgentConfig() helper is quite helpful in this case move
it to a more usable place and export it.

The API didn't use virDomainObjEndAPI to release the domain object thus
it leaked a reference to it.

Since the code is now separated into the common helper, we can reuse it
instead of maintaining two copies.

Both attach and detach functions get called only if the type matches.
Signed-off-by: NOlaf Hering <olaf@aepfle.de>
Cc: Jim Fehlig <jfehlig@suse.com>

Rearrange code so that the local variable is always initialized and
disposed.
Signed-off-by: NOlaf Hering <olaf@aepfle.de>
Cc: Jim Fehlig <jfehlig@suse.com>

Commit bf32462b missed initializing sdl.opengl.  Without the
initialization, libvirtd will be terminated by an assert from libxl:

Assertion `!libxl_defbool_is_default(db)' failed.
Reported-by: NOlaf Hering <olaf@aepfle.de>

If the domU configu has sdl enabled libvirtd crashes:
libvirtd[5158]: libvirtd: libxl.c:343: libxl_defbool_val:
Assertion `!libxl_defbool_is_default(db)' failed.

Initialize the relevant defbool variables in libxl_device_vfb.
Signed-off-by: NOlaf Hering <olaf@aepfle.de>
Cc: Jim Fehlig <jfehlig@suse.com>

Since net->model is not defined for containers we shouldn't touch it.
In case network adapter model is defined, a warning about ignoring
it is shown.
Signed-off-by: NMaxim Nestratov <mnestratov@parallels.com>

Pushed previous patch (commit id 'd45dadae') too quickly...

The patch just updates the patch from Laine's suggestions.

Commit ca329299 caused build errors in bhyvexml2argvtest.c because of
some undefined variables.

Pushing under the build breaker rule.

Fix for such a case:
1. Domain A and B xml contain the same SRIOV net hostdev(<interface
type='hostdev' /> with same pci address).
2. virsh start A (Successfully, and configure the SRIOV net with
custom mac)
3. virsh start B (Fail because of the hostdev used by domain A or other
reason.)
In step 3, 'virHostdevNetConfigRestore' is called for the hostdev
which is still used by domain A. It makes the mac/vlan of the SRIOV net
change.

Code Change in this fix:
1. As the pci used by other domain have been removed from
'pcidevs' in previous loop, we only restore the nic config for
the hostdev still in 'pcidevs'(used by this domain)
2. update the comments to make it more clear
Signed-off-by: NHuanle Han <hanxueluo@gmail.com>

Refactor some code to create a static function virHostdevIsPCINetDevice
which will detect whether the hostdev is a pci net device or not.
Signed-off-by: NHuanle Han <hanxueluo@gmail.com>

Similar to what was done for the channel socket in the previous commit.

Rather than depend on the RPM to put it in place, since this doesn't
cover the qemu:///session case. Currently auto allocated socket path is
completely busted with qemu:///session

https://bugzilla.redhat.com/show_bug.cgi?id=1105274

And because we chown the directory at driver startup now, this also fixes
autosocket startup failures when using user/group=root

https://bugzilla.redhat.com/show_bug.cgi?id=1044561
https://bugzilla.redhat.com/show_bug.cgi?id=1146886

Not sure if this is required, but it makes things consistent with the
rest of the directories.

Rather than duplicate libDir for each new path

- Make sure aarch64 host-passthrough works correctly
- Make sure libvirt doesn't choke on cpu model=host, which is what
  virt-install/virt-manager were incorrectly specifying up until recently.

virDomainGetJobStats is able to report statistics of a completed
migration, however to get usable downtime and total time statistics both
hosts have to keep synchronized time. To provide at least some
estimation of the times even when NTP daemons are not running on both
hosts we can just ignore the time needed to transfer a migration cookie
to the destination host. The result will be also inaccurate but a bit
more predictable. The total/down time will just be at least what we
report.

https://bugzilla.redhat.com/show_bug.cgi?id=1213434

==26726==    by 0x673CD67: __vasprintf_chk (vasprintf_chk.c:80)
==26726==    by 0x5673605: UnknownInlinedFun (stdio2.h:210)
==26726==    by 0x5673605: virVasprintfInternal (virstring.c:476)
==26726==    by 0x56736EE: virAsprintfInternal (virstring.c:497)
==26726==    by 0x5680C37: virGetUserRuntimeDirectory (virutil.c:866)
==26726==    by 0x5783A89: virNetSocketNewConnectUNIX (virnetsocket.c:572)
==26726==    by 0x57751AF: virNetClientNewUNIX (virnetclient.c:344)
==26726==    by 0x57689B3: doRemoteOpen (remote_driver.c:895)
==26726==    by 0x5769F8E: remoteConnectOpen (remote_driver.c:1195)
==26726==    by 0x57092DF: do_open (libvirt.c:1189)
==26726==    by 0x570A7BF: virConnectOpenAuth (libvirt.c:1341)

https://bugzilla.redhat.com/show_bug.cgi?id=1215042Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Commit 1268820a removed obsolete index() function and replaced it by
strchr.  Few versions of gcc has a bug and reports a warning about
strchr:

../../src/util/virstring.c:1006: error: logical '&&' with non-zero
constant will always evaluate as true [-Wlogical-op]
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

ListFindByID() still requires to step through items in the hash table
(in the worst case scenario through all of them), lock each one and
compare whether we've found what we're looking for. This is suboptimal
as locking a domain object means we need to wait for the current API
running over the object to finish.

Unfortunately, we can't drop the function completely because we have
this public API virDomainLookupByID which we can't drop.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This hash table will contain the same data as already existing one.
The only difference is that while the first table uses domain uuid as
key, the new table uses domain name. This will allow much faster (and
lockless) lookups by domain name.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Every domain that grabs a domain object to work over should
reference it to make sure it won't disappear meanwhile.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This is basically turning qemuDomObjEndAPI into a more general
function. Other drivers which gets a reference to domain objects may
benefit from this function too.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

There's no point in duplicating virObjectFreeHashData() in a separate
function.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

It's a pointer after all. We should initialize it to NULL instead of
false.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Since we haven't implemented balloon parameters tuning
we can just return amount of memory in this function.
Signed-off-by: NDmitry Guryanov <dguryanov@parallels.com>

For some devices, the $PCIDIR/vendor and $PCIDIR/device need to be
read. Iterate over them to get them as well in the the generated
apparmor profile.

Use the custom emulator pin setting with the highest priority same as
with vcpupin.

If this enviroment variable is set, the virTestCompareToFile helper
will overwrite the file content we are comparing against, if the
file doesn't exist or it doesn't match the expected input.

This is useful when adding new test cases, or making changes that
generate a lot of output churn.

Replaces a common pattern used in many test files

To remove a bunch of TestGetDebug()/TestGetVerbose() checks

Commit 2a530a3e is not portable to mingw, which intentionally
avoids declaring the obsolete index().  See also:
https://bugzilla.redhat.com/show_bug.cgi?id=1214605

* src/util/virstring.c (virStringStripControlChars): Use strchr.
Signed-off-by: NEric Blake <eblake@redhat.com>

CT stands for containers, i.e. def->os.type should be compared with VIR_DOMAIN_OSTYPE_EXE
rather than VIR_DOMAIN_OSTYPE_HVM
Signed-off-by: NMaxim Nestratov <mnestratov@parallels.com>

Instead of each API copying the same lines of code, lets use the
generic function designed just for that purpose.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Instead of each API copying the same lines of code, lets use the
generic function designed just for that purpose. At the same time,
drop useless connection object locking in some functions.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>