Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>

Shove it to the top of the file so that it can be reused earlier.

To allow easy implementation of a callback check this patch adds empty
post parse callbacks to drivers that were missing them.

To allow live modification of device backends in qemu libvirt needs to
be able to hot-add/remove "objects". Add monitor backend functions to
allow this.

This function will be used for hot-add/remove of RNG backends,
IOThreads, memory backing objects, etc.

Add a new option specifier that will optionally add a JSON key=value pair
containing a nested object if the added object isn't NULL.

The JSON structure constructor has an option to add JSON arrays to the
constructed object. The description is inaccurate as it can add any json
object even a dict. Change the docs to cover this option and reject
adding NULL objects.

Our qemu monitor code has a converter from key-value pairs to a json
value object. I want to re-use the code later and having it part of the
monitor command generator is inflexible. Split it out into a separate
helper.

As in the device info iterator add a switch that will force the compiler
to check that new device types are added to the ABI stability checker.

Although the device will probably inhibit migration add checks to make
sure that the configuration change gets caught.

Use typecasted switch statement and note the type used to select the
address type in a comment.

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

Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>

When enabling the migration_address option, by default it is
set to "127.0.0.1", but it's not a valid address for migration.
so we should add verification and set the default migration_address
to "0.0.0.0".
Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

if specifying migration_host to an Ipv6 address without brackets,
it was resolved to an incorrect address, such as:
    tcp:2001:0DB8::1428:4444,
but the correct address should be:
    tcp:[2001:0DB8::1428]:4444
so we should add brackets when parsing it.
Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>

Helper function to strip the brackets from an IPv6 address.
Tested by viruritest.

Few places still used hardcoded limit for maximum XML size for commands
that accept XML files. The hardcoded limits ranged from 8k to 1M. Use
VSH_MAX_XML_FILE to express this limit in a unified way. This will bump
the limit for the commands that used hardcoded string lengths to 10M.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1152427

dommemstat and blkdeviotune's man page incorrectly stated the usage of
--live and --config.

Signed-off-by: NWang Rui <moon.wangrui@huawei.com>

The actual origin of this so called typo are two commits.  The first one
was commit 72f8a7f1 that came up with the following condition:

if ((i == 8) & (flags & VIR_QEMU_PROCESS_KILL_FORCE))

Fortunately this succeeded thanks to bool being (int)1 and
VIR_QEMU_PROCESS_KILL_FORCE having the value of 1 << 0.  The check was
then moved and altered in 8fd38231 to
current state:

if ((i == 50) & force)

that will work again (both sides of '&' being booleans), but since this
was missed so many times, it may pose a problem in the future in case it
gets copy-pasted again.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

This started as an investigation into an issue where libvirt (using the
libxl driver) and the Xen host, like an old couple, could not agree on
who is responsible for selecting the VNC port to use.

Things usually (and a bit surprisingly) did work because, just like that
old couple, they had the same idea on what to do by default. However it
was possible that this ended up in a big argument.

The problem is that display information exists in two different places:
in the vfbs list and in the build info. And for launching the device model,
only the latter is used. But that never gets initialized from libvirt. So
Xen allows the device model to select a default port while libvirt thinks
it has told Xen that this is done by libvirt (though the vfbs config).

While fixing that, I made a stab at actually evaluating the configuration
of the video device. So that it is now possible to at least decide between
a Cirrus or standard VGA emulation and to modify the VRAM within certain
limits using libvirt.
Signed-off-by: NStefan Bader <stefan.bader@canonical.com>
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

This patch introduces a function to detect whether the specified
emulator is QEMU_XEN or QEMU_XEN_TRADITIONAL.  Detection is based on the
string "Options specific to the Xen version:" in '$qemu -help' output.
AFAIK, the only qemu containing that string in help output is the
old Xen fork (aka qemu-dm).

Note:
QEMU_XEN means a qemu that contains support for Xen.

QEMU_XEN_TRADITIONAL means Xen's old forked qemu 0.10.2
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

Allow the Xen drivers to determine default vram values.  Sane
default vaules depend on the device model being used, so the
drivers are in the best position to determine the defaults.

For the legacy xen driver, it is best to maintain the existing
logic for setting default vram values to ensure there are no
regressions.  The libxl driver currently does not support
configuring a video device.  Support will be added in a
subsequent patch, where the benefit of this change will be
reaped.
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

Commit 4dfc34c3 missed copying the user-specified keymap to
libxl_domain_build_info struct when creating a VFB device.
Signed-off-by: NStefan Bader <stefan.bader@canonical.com>
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

After set domain's numa parameters for running domain, save the change,
save the change into live xml is needed to survive restarting the libvirtd,
same story with bug 1146511; meanwihle add call
qemuDomainObjBeginJob/qemuDomainObjEndJob in qemuDomainSetNumaParameters
Signed-off-by: NShanzhi Yu <shyu@redhat.com>

add call qemuDomainObjBeginJob/qemuDomainObjEndJob in
qemuDomainSetInterfaceParameters
Signed-off-by: NShanzhi Yu <shyu@redhat.com>

After set the blkio parameters for running domain, save the change into
live xml is needed to survive restarting the libvirtd, same story with
bug 1146511, meanwhile add call qemuDomainObjBeginJob/qemuDomainObjEndJob
in qemuDomainSetBlkioParameters
Signed-off-by: NShanzhi Yu <shyu@redhat.com>

The pkg-config files in src/ make it pretty easy to build language
bindings against an uninstalled libvirt, however, they don't work with
VPATH builds. The reason is that all *-api.xml files are generated in
source rather than build directory.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1147057

The code for relabelling the TAP FD is there due to a race. When
libvirt creates a /dev/tapN device it's labeled as
'system_u:object_r:device_t:s0' by default. Later, when
udev/systemd reacts to this device, it's relabelled to the
expected label 'system_u:object_r:tun_tap_device_t:s0'. Hence, we
have a code that relabels the device, to cut the race down. For
more info see ae368ebf.

But the problem is, the relabel function is called on all TUN/TAP
devices. Yes, on /dev/net/tun too. This is however a special kind
of device - other processes uses it too. We shouldn't touch it's
label then.

Ideally, there would an API in SELinux that would label just the
passed FD and not the underlying path. That way, we wouldn't need
to care as we would be not labeling /dev/net/tun but the FD
passed to the domain. Unfortunately, there's no such API so we
have to workaround until then.
Tested-by: NRichard W.M. Jones <rjones@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Add ATTRIBUTE_UNUSED marker to the unused timeout_ms option
in esxVI_MultiCURL_TimerCallback.

Introduced by commit 125007d3.

This implementation uses the https://esx-server/screen?id=<id> way to get
a screenshot of a running domain. Compared to the CreateScreenshot_Task
way this works since ESX 2.5 while CreateScreenshot_Task was added in
version 4.0.

The newly added libcurl stream driver is used to directly provide the
downloaded data without saving it to a temporary file first.

This allows to implement libvirt functions that use streams, such as
virDoaminScreenshot, without the need to store the downloaded data in
a temporary file first. The stream driver directly interacts with
libcurl to send and receive data.

The driver uses the libcurl multi interface that allows to do a transfer
in multiple curl_multi_perform() calls. The easy interface would do the
whole transfer in a single curl_easy_perform() call. This doesn't work
with the libvirt stream API that is driven by multiple calls to the
virStreamSend() and virStreamRecv() functions.

The curl_multi_wait() function is used to do blocking operations. But it
was added in libcurl 7.28.0. For older versions it is emulated using the
socket callback of the multi interface.

The current driver only supports blocking operations. There is already
some code in place for non-blocking mode but it is not complete.

This patch fills in the functionality of
processNicRxFilterChangedEvent().  It now checks if it is appropriate
to respond to the NIC_RX_FILTER_CHANGED event (based on device type
and configuration) and takes appropriate action. Currently it checks
if the guest interface has been configured with
trustGuestRxFilters='yes', and if the host side device is macvtap. If
so, and the MAC address on the guest has changed, the MAC address of
the macvtap device is changed to match.

The result of this is that networking from the guest will continue to
work if the mac address of a macvtap-connected network device is
changed from within the guest, as long as trustGuestRxFilters='yes'
(previously changing the MAC address in the guest would break
networking).