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

When starting a domain with managed save image, we try to restore it
first. If the image is corrupted, we silently unlink it and just
normally start the domain. At this point the domain has no managed save
image, yet we did not reset the hasManagedSave flag.

https://bugzilla.redhat.com/show_bug.cgi?id=1460962Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Instead of enumerating all states which need to be turned into
QEMU_DOMAIN_JOB_STATUS_FAILED (and failing to add all of them), it's
better to mention just the one which needs to be left alone.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Almost every failure in qemuMigrationRun while we are talking to QEMU
monitor results in a jump to exit_monitor label. The only exception is
removed by this patch.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

The "ret" variable is used for storing the return value of a function
and should not be used as a temporary variable.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Merge cancel and cancelPostCopy sections with the generic error section,
where we can easily decide whether canceling the ongoing migration is
required.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Let cleanup only do things common to both failure and success paths and
move error handling code inside the new "error" section.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Some code which was supposed to be executed only when migration
succeeded was buried inside the cleanup code.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

When adding a new job state it's useful to let the compiler complain
about places where we need to think about what to do with the new
state.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1434451

This way users can uniquely identify devices at define time.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Since we will be allowing users to set device aliases and memory
devices are fragile when it comes to aliases we have to make sure
they won't change during migration. Other devices should be fine.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

They have to be unique within the domain. As usual, backwards
compatibility takes its price. In this particular situation we
have a device that is represented twice in a domain and so is its
alias.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

When assigning alias to a device we usually iterate over other
devices of its kind trying to find next index. We do this by
stripping down the prefix and then parsing number at the end,
Usually, if the prefix doesn't match the one we are expecting, we
just continue with next iteration. Except for couple of
functions: qemuGetNextChrDevIndex(),
qemuAssignDeviceRedirdevAlias() and qemuAssignDeviceShmemAlias().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

The only remaining user of qemuMonitorGetMigrationCapability is our test
suite. Let's replace qemuMonitorGetMigrationCapability with
qemuMonitorGetMigrationCapabilities there and drop the unused function.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

All calls to qemuMonitorGetMigrationCapability in QEMU driver are
replaced with qemuMigrationCapsGet.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Each time we need to check whether a given migration capability is
supported by QEMU, we call query-migrate-capabilities QMP command and
lookup the capability in the returned list. Asking for the list of
supported capabilities once when we connect to QEMU and storing the
result in a bitmap is much better and we don't need to enter a monitor
just to check whether a migration capability is supported.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

The new function is called qemuProcessInitMonitor and it will enter/exit
the monitor so that the caller doesn't have to deal with this.

The goal of this patch is to simplify the code in qemuConnectMonitor
which would otherwise be a bit hairy after the following patch.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Since the encryption information can also be disk source specific
move it from qemuDomainDiskPrivate to qemuDomainStorageSourcePrivate

Since the last allocated element from qemuDomainDiskPrivate is
removed, that means we no longer need qemuDomainDiskPrivateDispose.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

Since the secret information is really virStorageSource specific
piece of data, let's manage the privateData from there instead of
at the Disk level.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

Add the object definition and helpers to store security-related private
data for virStorageSources.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

When commit id 'da86c6c2' added support for diskPriv->encinfo in
qemuDomainSecretDiskPrepare a change to qemuDomainSecretDiskDestroy
to was missed. Although qemuDomainDiskPrivateDispose probably would
do the trick.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1495511

When creating new /dev for domain ran in namespace we try to
preserve all sub-mounts of /dev. Well, not quite all. For
instance if /dev/foo/bar and /dev/foo are both mount points, only
/dev/foo needs preserving. /dev/foo/bar is preserved with it too.
Now, to identify such cases like this one STRPREFIX() is used.
That is not good enough. While it works for [/dev/foo/bar;
/dev/foo] case, it fails for [/dev/prefix; /dev/prefix2] where
the strings share the same prefix but are in fact two different
paths. The solution is to use STRSKIP().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

In the future, some aliases might be already parsed therefore we
should avoid overwriting them.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Let's move all the virAsprintf()-s into separate functions for
better structure of the code. Later, when somebody wants to
generate a device alias, all they need is to expose the function.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

We have a special function for assigning aliases to RNG devices.
Use that instead of plain virAsprintf().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Apart from killing a lot of code this also "implements" authentication
and encryption for USB disks.

Get rid of the first copy of the mess.

This horrible piece of spaghetti code is copy-past(ae)d in the SCSI and
USB disk hotplug code with minimal changes. Extract it for further
reuse.

Some messages deal with the disk itself thus using the disk target is
better than using the disk source name which can be NULL in some cases.

The check if the disk is empty is wrong and would spuriously reject NBD
sources. Remove it.

The code can't fail so having error handling is pointless.

Move the space after the colon.

Back in the times of using 'pci_del', unplugging a device without
a PCI address was not wired up.

After completely removing support for qemu without QEMU_CAPS_DEVICE,
aliases are used to uniquely identify devices in all cases.

Remove the pointless validation of data that was already present
in the domain definition.

There is no point in iterating over all devices if none of them
could possibly match.

Allow unplugging USB and virtio USB devices.

https://bugzilla.redhat.com/show_bug.cgi?id=1379603

For both virtio input devices and USB input devices.

https://bugzilla.redhat.com/show_bug.cgi?id=1379603

A function that builds the -device string for input devices.

Move assignment of input device alias into a separate function,
for reuse on hotplug.

https://bugzilla.redhat.com/show_bug.cgi?id=1379603