Finally add public method to retrieve the list of currently connected clients
to a given server.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Although we document 6 types of transport that we support, internally we can
only differentiate between TCP, TLS, and UNIX transports only, since both SSH
and libssh2 transports, due to using netcat, behave in the exactly the same
way as a UNIX socket.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

We have to expose some constants, in order for the client object transport
field to make sense.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

For now, the list copy is done simply by locking the whole server, walking the
original and increasing the refcount on each object. We may want to change
the list to a lockable object (like list of domains) later in the future if
we discover some performance issues related to locking the whole server in
order to walk the whole list of clients, possibly issuing some 'ForEach'
callback.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Now that libvirt-admin supports another client-side object and provided that
we want to generate as many both client-side and server-side RPC dispatchers,
support for this needs to be added to gendispatch.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Besides ID, the object also stores static data like connection transport and
connection timestamp, since once obtained a list of all clients connected to a
server, from user's perspective, it would be nice to know whether a given
client is remote or local only and when did it connect to the daemon.
Along with the object introduction, all necessary client-side methods necessary
to work with the object are added as well.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Besides ID, libvirt should provide several parameters to help the user
distinguish two clients from each other. One of them is the connection
timestamp. This patch also adds a testcase for proper JSON formatting of the
new attribute too (proper formatting of older clients that did not support
this attribute yet is included in the existing tests) - in order to
testGenerateJSON to work, a mock of time_t time(time_t *timer) needed to be
created.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Admin API needs a way of addressing specific clients. Unlike servers, which we
are happy to address by names both because its name reflects its purpose (to
some extent) and we only have two of them (so far), naming clients doesn't make
any sense, since a) each client is an anonymous, i.e. not recognized after a
disconnect followed by a reconnect, b) we can't predict what kind of requests
it's going to send to daemon, and c) the are loads of them comming and going,
so the only viable option is to use an ID which is of a reasonably wide data
type.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Move the code dealing with init scripts to a separate file
so configure.ac itself can be a little bit smaller.

Most distributions, including RHEL, have switched to systemd,
so we should detect it and act accordingly. This also means
that 'systemd+redhat' should be preferred to legacy 'redhat'.

Our witness for the check is the availability of the systemctl
command on the host.

If we didn't find a match, either because we're cross compiling
or because we're not building on RHEL, we won't install any
init script.

Make sure this is reported correctly in the configure summary.

Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

This patch adds by default a panic device with model s390 to S390 guests.
Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

If a panic device is being defined without a model in a domain
the default value is always overwritten with model ISA. An ISA
bus does not exist on S390 and therefore specifying a panic device
results in an unsupported configuration.
Since the S390 architecture inherently provides a crash detection
capability the panic device should be defined in the domain xml.

This patch adds an s390 panic device model and prevents setting a
device address on it.
Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>

Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

Adding the default bus type ISA to the message.
Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

The iohelper dies on SIGPIPE if the stream is closed before all data
is processed. IMO this should be an error condition for virStreamFinish
according to docs like:

  * This method is a synchronization point for all asynchronous
  * errors, so if this returns a success code the application can
  * be sure that all data has been successfully processed.

However for virStreamAbort, not so much:

  * Request that the in progress data transfer be cancelled
  * abnormally before the end of the stream has been reached.
  * For output streams this can be used to inform the driver
  * that the stream is being terminated early. For input
  * streams this can be used to inform the driver that it
  * should stop sending data.

Without this, virStreamAbort will realistically always error for
active streams like domain console. So, treat the SIGPIPE case
as non-fatal if abort is requested.

Note, this will only affect an explicit user requested abort. An
abnormal abort, like from a server error, always raises an error
in the daemon.

Every time a client aborts a stream via the virStreamAbort API,
the daemon always logs an error like:

  error : daemonStreamHandleAbort:617 : stream aborted at client request

and that same error is returned to the client. Meaning virStreamAbort
always returns -1, which seems strange.

This reworks the error handling to only raise an error on virStreamAbort
if the actual server side abort call raises an error. This is similar
to how virStreamFinish works.

If the abort code path is triggered by an unexpected message type
then we continue to raise an unconditional error. Also drop a redundant
VIR_WARN call there, since virReportError will raise a VIR_ERROR anyways

The described protocol semantics really only apply to server initiated
stream messages. Document the semantics for client messages.

These are the only places where we don't set stream->closed when
aborting the stream. This leads to spurious errors when the client
hangs up unexpectedly:

error : virFDStreamUpdateCallback:127 : internal error: stream is not open

Calling virStreamFinish prematurely seems to trigger this code path
even after the stream is closed, which ends up hitting this error
message later:

error : virFDStreamUpdateCallback:127 : internal error: stream is not open

Skip this function if stream->closed, which is used in many other places
like read/write handlers

This is the only place in daemon/stream.c that sets
'stream->closed = true' but neglects to actually abort the stream
and remove the callback, which seems wrong.

This happens when virStreamFinish/Abort are called, but iohelper
still has data to process.

Rather than poorly duplicate it

Let's us de-nest some of the logic, and will simplify upcoming
patches

libvirt-daemon-config-nwfilter will put a bunch of xml configs
into /etc/libvirt/nwfilter. These configs don't hardcode a UUID
and depends on libvirt to generate one. However the generated UUID
is never saved to disk, unless the user manually calls Define.

This makes daemon reload quite noisy with many errors like:

error : virNWFilterObjAssignDef:3101 : operation failed: filter 'allow-incoming-ipv4' already exists with uuid 50def3b5-48d6-46a3-b005-cc22df4e5c5c

Because a new UUID is generated every time the config is read from
disk, so libvirt constantly thinks it's finding a new nwfilter.

Detect if we generated a UUID when the config file is loaded; if so,
resave the new contents to disk to ensure the UUID is persisteny.

This is similar to what was done in commit a47ae7c0 with virtual
networks and generated MAC addresses

This matches the pattern used for network object APIs, and we want
configDir in LoadConfig for upcoming patches

In virNWFilterObjLoad we can still fail after virNWFilterObjAssignDef,
but we don't unlock and free the created virNWFilterObjPtr in the
cleanup path.

The bit we are trying to do after AssignDef is just STRDUP in the
configFile path. However caching the configFile in the NWFilterObj
is largely redundant and doesn't follow the same pattern we use
for domain and network objects.

So just remove all the configFile caching which fixes the latent
bug as a side effect.

We will segfault of a daemon reload picks up a new network config
that needs to be autostarted. We shouldn't be passing NULL for
network_driver here. This seems like it was missed in the larger
rework in commit 1009a61e

The default USB controller is not sent to destination as the older versions
of libvirt(0.9.4 or earlier as I see in commit log of 409b5f54) didn't
support them. For some archs where the support started much later can
safely send the USB controllers without this worry. So, send the controller
to destination for all archs except x86. Moreover this is not very applicable
to x86 as the USB controller has model ich9_ehci1 on q35 and for pc-i440fx,
there cant be any slots before USB as it is fixed on slot 1.

The patch fixes a bug that, if the USB controller happens to occupy
a slot after disks/interfaces and one of them is hot-unplugged, then
the default USB controller added on destination takes the smallest slot
number and that would lead to savestate mismatch and migration
failure. Seen and verified on PPC64.
Signed-off-by: NShivaprasad G Bhat <sbhat@linux.vnet.ibm.com>

We historically format runtime seclabel selinux/apparmor values,
however we skip formatting runtime DAC values. This was added in

commit 990e46c4
Author: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Date:   Fri Aug 31 13:40:41 2012 +0200

    conf: Avoid formatting auto-generated DAC labels

to maintain migration compatibility with libvirt < 0.10.0.

However the formatting was skipped unconditionally. Instead only
skip formatting in the VIR_DOMAIN_DEF_FORMAT_MIGRATABLE case.

https://bugzilla.redhat.com/show_bug.cgi?id=1215833

Trying to define a pool name containing an embedded '/'
will immediately fail when trying to write the XML to disk.
This patch explicitly rejects names containing a '/'

Besides our stateful driver, there are two other storage impls:
esx and phyp. esx doesn't support pool creation, so this should
doesn't apply.

phyp does support pool creation, and the name is passed to the
'mksp' tool, which google doesn't reveal whether it accepts '/'
or not. IMO the likeliness of this impacting any users is near zero

Trying to define a network name containing an embedded '/'
will immediately fail when trying to write the XML to disk.
This patch explicitly rejects names containing a '/'

Besides the network bridge driver, the only other network
implementation is a very thin one for virtualbox, which seems to
use the network name as a host interface name, which won't
accept '/' anyways, so I think this is fine to do unconitionally.

https://bugzilla.redhat.com/show_bug.cgi?id=787604

Trying to define a domain name containing an embedded '/'
will immediately fail when trying to write the XML to disk for
our stateful drivers. This patch explicitly rejects names
containing a '/', and provides an xmlopt feature for drivers
to avoid this validation check, which is enabled in every
non-stateful driver that already has xmlopt handling wired up.

(Technically this could reject a previously accepted vmname like
 '/foo', however at least for the qemu driver that falls over
 later when starting qemu)

https://bugzilla.redhat.com/show_bug.cgi?id=639923

We were lacking tests that are checking for the completeness of our
nodedev XMLs and also whether we output properly formatted ones.  This
patch adds parsing for the capability elements inside the <capability
type='pci'> element.  Also bunch of tests are added to show everything
works properly.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

There were few things done in the nodedev code but we were lacking tests
for it.  And because of that we missed that the schema was not updated
either.  Fix the schema and add various test files to show the schema
is correct.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

All sub-PCI capabilities should be next to each other for clarity.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

We had both and the only difference was that the latter also included
information about multifunction setting.  The problem with that was that
we couldn't use functions made for only one of the structs (e.g.
parsing).  To consolidate those two structs, use the one in virpci.h,
include that in domain_conf.h and add the multifunction member in it.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

If we failed to build the aliases or attach the chardev, then the props
would be leaked - fix that.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>