The unitialized local variable qemuVersion can cause an random value
to be returned for the hypervisor version, observable with virsh version.
Introduced by commit b46f7f4aSigned-off-by: NViktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

disk->src is still used for disks->hosts->name, do not free it.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

The QEMU driver has a list of devices nodes that are whitelisted
for all guests. The kernel has recently started returning an
error if you try to whitelist a device which does not exist.
This causes a warning in libvirt logs and an audit error for
any missing devices. eg

2013-02-27 16:08:26.515+0000: 29625: warning : virDomainAuditCgroup:451 : success=no virt=kvm resrc=cgroup reason=allow vm="vm031714" uuid=9d8f1de0-44f4-a0b1-7d50-e41ee6cd897b cgroup="/sys/fs/cgroup/devices/libvirt/qemu/vm031714/" class=path path=/dev/kqemu rdev=? acl=rw
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

s/VIR_QEMU_PROCESS_START_AUTODESROY/VIR_QEMU_PROCESS_START_AUTODESTROY/
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The code for putting the emulator threads in a separate cgroup
would spam the logs with warnings

2013-02-27 16:08:26.731+0000: 29624: warning : virCgroupMoveTask:887 : no vm cgroup in controller 3
2013-02-27 16:08:26.731+0000: 29624: warning : virCgroupMoveTask:887 : no vm cgroup in controller 4
2013-02-27 16:08:26.732+0000: 29624: warning : virCgroupMoveTask:887 : no vm cgroup in controller 6

This is because it has only created child cgroups for 3 of the
controllers, but was trying to move the processes from all the
controllers. The fix is to only try to move threads in the
controllers we actually created. Also remove the warning and
make it return a hard error to avoid such lazy callers in the
future.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The virQEMUCloseCallbacksRunOne method was passing a uuid string
to virDomainObjListFindByUUID, when it actually expected to get
a raw uuid buffer. This was not caught by the compiler because
the method was using a 'void *uuid' instead of first casting
it to the expected type.

This regression was accidentally caused by refactoring in

  commit 568a6cda
  Author: Jiri Denemark <jdenemar@redhat.com>
  Date:   Fri Feb 15 15:11:47 2013 +0100

    qemu: Avoid deadlock in autodestroy
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=896092 mentions that
qemu 1.4 and earlier only accept a simple start-stop range for
the cpu=... argument of -numa.  Libvirt would attempt to use
-numa cpu=1,3 for a disjoint range, which did not work as intended.

Upstream qemu will be adding a new syntax for disjoint cpu ranges
in 1.5; but the design for that syntax is still under discussion
at the time of this patch.  So for libvirt 1.0.3, it is safest to
just reject attempts to build an invalid qemu command line; in the
future, we can add a capability bit and translate to the final
accepted design for selecting a disjoint cpu range in numa.

* src/qemu/qemu_command.c (qemuBuildNumaArgStr): Reject disjoint
ranges.

This reverts commit 383ebc46.

We decided the xml for this feature needed more thought to make sure
we are doing it the best way, in particular wrt option values that
have multiple items.

To avoid confusion about usage of this function explicitly document that
this function returns copy of the attribute string.

These two flags in fact are mutually exclusive. Requesting them both
doesn't make any sense regardless of hypervisor driver. Hence, we have
to make it within libvirt.c file instead of fixing it in each driver.

Eugene Marcotte reported that if gcrypt-devel (a prereq of
gnutls-devel) is not present, then compilation fails due to
an unconditional use of <gcrypt.h>.

* src/libvirt.c (includes): Properly guard use of gcrypt.h.

This reverts commit 0bbbd42c.

The design for this feature is not complete, and may change the
name of the 'schid' attribute.  Revert requested by Viktor Mihajlovski.

This fixes a potential NULL deref identified by John Ferlan
<jferlan@redhat.com> if scandir() didn't return an expected value.

The parallels storage driver declared some loop variables
inside the for(;;). This is not allowed by libvirt coding
standards
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

This change tried to fix a crash with changing CDROM media but
failed to actually do so

  commit d0172d2b
  Author: Osier Yang <jyang@redhat.com>
  Date:   Tue Feb 19 20:27:45 2013 +0800

    qemu: Remove the shared disk entry if the operation is ejecting or updating

It was still accessing disk->src, when the entire 'disk' object
has been free'd already. Even if it weren't free'd, accessing
the 'src' value of virDomainDiskDef is not allowed without
first validating disk->type is file or block. Just remove the
broken code entirely.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

VIR_ERR_NO_CONNECT already contains "no connection driver available".

This patch changes:
no connection driver available for No connection for URI hello
to:
no connection driver available for hello

Bug: https://bugzilla.redhat.com/show_bug.cgi?id=851413

Currently we call virSetDeviceUnprivSGIO with val == 0 if a block device
has an sgio attribute.  But for sgio='filtered', we know that a
kernel with no unpriv_sgio support will always behave as the user
wanted.  In this case, there is no need to call the function and
report a (bogus) error.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

If virCondInit fails (okay, so that's unlikely), then we end up
attempting a virObjectUnlock() on the cleanup path, even though
we don't hold a lock.  This is not guaranteed to be safe.  While
at it, I noticed a couple places where we were referencing mon->fd
outside locks.

* src/qemu/qemu_monitor.c (qemuMonitorOpenInternal): Minimize lock
duration.  mon->watch doesn't need clean up on error.
(qemuMonitorGetBlockExtent, qemuMonitorBlockResize): Don't
dereference fd outside of lock.

I built without yajl support, and noticed a strange failure message
in qemumonitorjsontest:

2013-02-22 16:12:37.503+0000: 19812: error : virJSONValueToString:1119 : internal error No JSON parser implementation is available
2013-02-22 16:12:37.503+0000: 19812: error : qemuMonitorJSONCommandWithFd:253 : out of memory

While a later patch will fix the test to skip when json is not present,
this patch avoids overriding the more useful error message from
virJSONValueToString returning NULL.

* src/qemu/qemu_monitor_json.c (qemuMonitorJSONCommandWithFd):
Don't override message.
(qemuMonitorJSONCheckError): Don't print NULL.
* src/qemu/qemu_agent.c (qemuAgentCommand): Don't override message.
(qemuAgentCheckError): Don't print NULL.
(qemuAgentArbitraryCommand): Properly fail on OOM.

The new TypedParam helper APIs allow to simplify this function
significantly.

This patch integrates the fix in 75e5bec9
by correctly ordering the setting functions instead of reordering the
parameters.

The bridge device was showing the vnet devices created for the domains
as connected to the bridge. libvirt should only show host devices when
trying to get the interface definition rather than the domain devices as
well.

uid_t and gid_t are opaque types, ranging from s32 to u32 to u64.

Explicitly cast the magic -1 to the appropriate type.
Signed-off-by: NPhilipp Hahn <hahn@univention.de>

uid_t and gid_t are opaque types, ranging from s32 to u32 to u64.

Explicitly cast them to unsigned int for printing.
Signed-off-by: NPhilipp Hahn <hahn@univention.de>

The uid_t|gid_t values are explicitly casted to "unsigned long", but the
printf() still used "%d", which is for signed values.

Change the format to "%u".
Signed-off-by: NPhilipp Hahn <hahn@univention.de>

This patch adds a new capability bit QEMU_CAPS_OBJECT_RNG_EGD and code
to support the egd backend for the VirtIO RNG device.

The device is added by 3 qemu command line options:
-chardev socket,id=charrng0,host=1.2.3.4,port=1234 (communication
                                                    backend)
-object rng-egd,chardev=charrng0,id=rng0 (RNG protocol client)
-device virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x4 (the RNG device)

This patch implements support for the virtio-rng-pci device and the
rng-random backend in qemu.

Two capabilities bits are added to track support for those:

QEMU_CAPS_DEVICE_VIRTIO_RNG - for the device support and
QEMU_CAPS_OBJECT_RNG_RANDOM - for the backend support.

qemu is invoked with these additional parameters if the device is
enabled:

-object rng-random,id=rng0,filename=/test/phile (to add the backend)
-device virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x4 (to add the device)

This patch adds basic configuration support for the RNG device
supporting the virtio model with the "random" and "egd" backend types as
described in the schema in the previous patch.

This patch adds a fake switch statement to force the compiler to warn
after a new device type was added. This should remind the contributor to
add the new device also to this iterator function.

Originally, only a host name was used to associate a
DHCPv6 request with a specific IPv6 address.  Further testing
demonstrates that this is an unreliable method and, instead,
a client-id or DUID needs to be used.  According to DHCPv6
standards, this id can be a duid-LLT, duid-LL, or duid-UUID
even though dnsmasq will accept almost any text string.

Although validity checking of a specified string makes sure it is
hexadecimal notation with bytes separated by colons, there is no
rigorous check to make sure it meets the standard.

Documentation and schemas have been updated.
Signed-off-by: NGene Czarcinski <gene@czarc.net>
Signed-off-by: NLaine Stump <laine@laine.org>

For really old qemu-img binaries which do not support specifying
the format of the backing file, display a DEBUG message instead of
INFO that this can't be done.

Modify the expected output of storagevolxml2argv tests as well.

This allows us to create a test for the generated command line.

If a migration fails, we need to stop all block jobs running so
qemu doesn't try to send data to destination over and over again.

At the end of migration, it is important to stop NBD
server and thus release all allocated resources.

This function does the source part of NBD magic. It
invokes drive-mirror on each non shared and RW disk with
a source and wait till the mirroring process completes.
When it does we can proceed with migration.

Currently, an active waiting is done: every 500ms libvirt
asks qemu if block-job is finished or not.  However, once
the job finishes, qemu doesn't report its progress so we
can only assume if the job finished successfully or not.
The better solution would be to listen to the event which
is sent as soon as the job finishes. The event does
contain the result of job.

We need to start NBD server and feed it with all non-<shared/>,
RW and source-full disks. Moreover, with new virPortAllocator we
must ensure the borrowed port for NBD server will be returned if
either migration completes or qemu process is torn down.