To allow virDomainOpenConsole to access non-primary consoles,
device aliases are required to be set. Until now only the QEMU
driver has done this. Update LXC & UML to set aliases for any
console devices

* src/lxc/lxc_driver.c, src/uml/uml_driver.c: Set aliases
  for console devices

When no <target> element was set at all, the default console
target type was not being honoured

* src/conf/domain_conf.c: Set default target type for consoles
  with no <target>

Currently the LXC controller only supports setup of a single
text console. This is wired up to the container init's stdio,
as well as /dev/console and /dev/tty1. Extending support for
multiple consoles, means wiring up additional PTYs to /dev/tty2,
/dev/tty3, etc, etc. The LXC controller is passed multiple open
file handles, one for each console requested.

* src/lxc/lxc_container.c, src/lxc/lxc_container.h: Wire up
  all the /dev/ttyN links required to symlink to /dev/pts/NN
* src/lxc/lxc_container.h: Open more container side /dev/pts/NN
  devices, and adapt event loop to handle I/O from all consoles
* src/lxc/lxc_driver.c: Setup multiple host side PTYs

The current I/O code for LXC uses a hand crafted event loop
to forward I/O between the container & host app, based on
epoll to handle EOF on PTYs. This event loop is not easily
extensible to add more consoles, or monitor other types of
file descriptors.

Remove the custom event loop and replace it with a normal
libvirt event loop. When detecting EOF on a PTY, disable
the event watch on that FD, and fork off a background thread
that does a edge-triggered epoll() on the FD. When the FD
finally shows new incoming data, the thread re-enables the
watch on the FD and exits.

When getting EOF from a read() on the PTY, the existing code
would do waitpid(WNOHANG) to see if the container had exited.
Unfortunately there is a race condition, because even though
the process has closed its stdio handles, it might still
exist.

To deal with this the new event loop uses a SIG_CHILD handler
to perform the waitpid only when the container is known to
have actually exited.

* src/lxc/lxc_controller.c: Rewrite the event loop to use
  the standard APIs.

qemuBuildVirtioSerialPortDevStr was mistakenly accessing the
target.name field in the virDomainChrDef object for chardevs
belonging to a console. Those chardevs only have port set,
and if there's > 1 console, the > 1port number results in
trying to access a target.name with address 0x1

* src/qemu/qemu_command.c: Fix target.name handling and
  make code more robust wrt error reporting

* src/qemu/qemu_command.c: Conditionally access target.name

While Xen only has a single paravirt console, UML, and
QEMU both support multiple paravirt consoles. The LXC
driver can also be trivially made to support multiple
consoles. This patch extends the XML to allow multiple
<console> elements in the XML. It also makes the UML
and QEMU drivers support this config.

* src/conf/domain_conf.c, src/conf/domain_conf.h: Allow
  multiple <console> devices
* src/lxc/lxc_driver.c, src/xen/xen_driver.c,
  src/xenxs/xen_sxpr.c, src/xenxs/xen_xm.c: Update for
  internal API changes
* src/security/security_selinux.c, src/security/virt-aa-helper.c:
  Only label consoles that aren't a copy of the serial device
* src/qemu/qemu_command.c, src/qemu/qemu_driver.c,
  src/qemu/qemu_process.c, src/uml/uml_conf.c,
  src/uml/uml_driver.c: Support multiple console devices
* tests/qemuxml2xmltest.c, tests/qemuxml2argvtest.c: Extra
  tests for multiple virtio consoles. Set QEMU_CAPS_CHARDEV
  for all console /channel tests
* tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-auto.args,
  tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
  tests/qemuxml2argvdata/qemuxml2argv-console-virtio.args: Update
  for correct chardev syntax
* tests/qemuxml2argvdata/qemuxml2argv-console-virtio-many.args,
  tests/qemuxml2argvdata/qemuxml2argv-console-virtio-many.xml: New
  test file

Allow the user to call with nparams too small, per API documentation.

* src/xen/xen_hypervisor.c (xenHypervisorGetSchedulerParameters):
Allow fewer than max.
* src/xen/xend_internal.c (xenDaemonGetSchedulerParameters):
Likewise.

libvirt.c guarantees that nparams is non-zero for scheduler parameters.

* src/test/test_driver.c (testDomainGetSchedulerParamsFlags): Drop
redundant check.  Avoid strcpy.

Allow the user to call with nparams too small, per API documentation.
Also, libvirt.c filters out nparams of 0 for scheduler parameters.

* src/lxc/lxc_driver.c (lxcDomainGetMemoryParameters): Allow fewer
than max.
(lxcGetSchedulerParametersFlags): Drop redundant check.

Allow the user to call with nparams too small, per API documentation.

* src/libxl/libxl_driver.c
(libxlDomainGetSchedulerParametersFlags): Allow fewer than max.

Allow the user to call with nparams too small, per API documentation.

* src/esx/esx_driver.c (esxDomainGetMemoryParameters): Drop
redundant check.
(esxDomainGetSchedulerParametersFlags): Allow fewer than max.

Document the parameter names that will be used by
virDomain{Get,Set}SchedulerParameters{,Flags}, rather than
hard-coding those names in each driver, to match what is
done with memory, blkio, and blockstats parameters.

* include/libvirt/libvirt.h.in (VIR_DOMAIN_SCHEDULER_CPU_SHARES)
(VIR_DOMAIN_SCHEDULER_VCPU_PERIOD)
(VIR_DOMAIN_SCHEDULER_VCPU_QUOTA, VIR_DOMAIN_SCHEDULER_WEIGHT)
(VIR_DOMAIN_SCHEDULER_CAP, VIR_DOMAIN_SCHEDULER_RESERVATION)
(VIR_DOMAIN_SCHEDULER_LIMIT, VIR_DOMAIN_SCHEDULER_SHARES): New
field name macros.
* src/qemu/qemu_driver.c (qemuSetSchedulerParametersFlags)
(qemuGetSchedulerParametersFlags): Use new defines.
* src/test/test_driver.c (testDomainGetSchedulerParamsFlags)
(testDomainSetSchedulerParamsFlags): Likewise.
* src/xen/xen_hypervisor.c (xenHypervisorGetSchedulerParameters)
(xenHypervisorSetSchedulerParameters): Likewise.
* src/xen/xend_internal.c (xenDaemonGetSchedulerParameters)
(xenDaemonSetSchedulerParameters): Likewise.
* src/lxc/lxc_driver.c (lxcSetSchedulerParametersFlags)
(lxcGetSchedulerParametersFlags): Likewise.
* src/esx/esx_driver.c (esxDomainGetSchedulerParametersFlags)
(esxDomainSetSchedulerParametersFlags): Likewise.
* src/libxl/libxl_driver.c (libxlDomainGetSchedulerParametersFlags)
(libxlDomainSetSchedulerParametersFlags): Likewise.

The field 'mon' in 'struct tm' gives months 0-11, where as
humans tend to expect months 1-12. Thus the month number
needing adjusting by 1

* src/util/logging.c: Use human friendly month number

* src/qemu/qemu_driver.c: Fix use of uninitialized 'params'

commit 27908453 introduces a regression, and it will
cause libvirt crashed when starting network.

The reason is that tapfd may be NULL, but we dereference
it without checking whether it is NULL.

Since all virTypedParameter APIs allow us to return the number
of slots we actually populated, we should allow the user to
call with nparams too small (without overrunning their array)
or too large (ignoring the tail of the array that we can't fill),
rather than requiring that they get things exactly right.

Making this change will make it easier for a future patch to
introduce VIR_TYPED_PARAM_STRING, with filtering in libvirt.c
rather than in every single driver, since users already have
to be prepared for *nparams to be smaller on exit than on entry.

* src/qemu/qemu_driver.c (qemuDomainGetBlkioParameters)
(qemuDomainGetMemoryParameters): Allow variable nparams on entry.
(qemuGetSchedulerParametersFlags): Drop redundant check.
(qemudDomainBlockStats, qemudDomainBlockStatsFlags): Rename...
(qemuDomainBlockStats, qemuDomainBlockStatsFlags): ...to this.
Don't return unavailable stats.

virDomainBlockStatsFlags was missing a check that was present in
virDomainGetMemoryParameters.  Additionally, I found that the
existing descriptions were a bit hard to read.  A later patch
will fix qemu to return fewer than max parameters if @nparams
was too small on input.

* src/libvirt.c (virDomainGetMemoryParameters)
(virDomainGetBlkioParameters, virDomainGetSchedulerParameters)
(virDomainGetSchedulerParametersFlags):
Tweak documentation wording.
(virDomainBlockStatsFlags): Likewise, and add sanity check.

If an LXC VM fails to start, quite a few cleanup paths will
result in the original error message being overwritten. Some
other cleanup paths also forgot to actually terminate the VM.

* src/lxc/lxc_driver.c: Ensure VM is terminated on startup
  failure and preserve original error

The LXC code for mounting container filesystems from block devices
tries all filesystems in /etc/filesystems and possibly those in
/proc/filesystems. The regular mount binary, however, first tries
using libblkid to detect the format. Add support for doing the same
in libvirt, since Fedora's /etc/filesystems is missing many formats,
most notably ext4 which is the default filesystem Fedora uses!

* src/Makefile.am: Link libvirt_lxc to libblkid
* src/lxc/lxc_container.c: Probe filesystem format with libblkid

If we looped through /etc/filesystems trying to mount with each
type and failed all options, we forget to actually raise an
error message.

* src/lxc/lxc_container.c: Raise error if unable to detect
  the filesystems. Also fix existing error message

The kernel automounter is mostly broken wrt to containers. Most
notably if you start a new filesystem namespace and then attempt
to unmount any autofs filesystem, it will typically fail with a
weird error message like

  Failed to unmount '/.oldroot/sys/kernel/security':Too many levels of symbolic links

Attempting to detach the autofs mount using umount2(MNT_DETACH)
will also fail with the same error. Therefore if we get any error on
unmount()ing a filesystem from the old root FS when starting a
container, we must immediately break out and detach the entire
old root filesystem (ignoring any mounts below it).

This has the effect of making the old root filesystem inaccessible
to anything inside the container, but at the cost that the mounts
live on in the kernel until the container exits. Given that SystemD
uses autofs by default, we need LXC to be robust this scenario and
thus this tradeoff is worthwhile.

* src/lxc/lxc_container.c: Detach root filesystem if any umount
  operation fails.

The /etc/filesystems file can contain a '*' on the last line to
indicate that /proc/filessystems should be tried next. We have
a check that this '*' only occurs on the last line. Unfortunately
when we then start reading /proc/filesystems, we mistakenly think
we've seen '*' in /proc/filesystems and fail

* src/lxc/lxc_container.c: Skip '*' validation when we're reading
  /proc/filesystems

Only some of the return paths of lxcContainerWaitForContinue will
have set errno. In other paths we need to set it manually to avoid
the caller getting a random stale errno value

* src/lxc/lxc_container.c: Set errno in lxcContainerWaitForContinue

We already have a /var/lib/libvirt/images for OS install images.
We need a separate /var/lib/libvirt/filesystems for OS install
trees, since SELinux labelling will be different

* libvirt.spec.in: Add /var/lib/libvirt/filesystems
* src/Makefile.am: Create /var/lib/libvirt/filesystems

Allow the datacenter and compute resource parts of the path
to be prefixed with folders. Therefore, the way the path is
parsed has changed. Before, it was split in 2 or 3 items and
the items' meanings were determined by their positions. Now
the path can have 2 or more items and the the vCenter server
is asked whether a folder, datacenter of compute resource
with the specified name exists at the current hierarchy level.

Before the datacenter and compute resource lookup automatically
traversed folders during lookup. This is logic got removed
and folders have to be specified explicitly.

The proper datacenter path including folders is now used when
accessing a datastore over HTTPS. This makes virsh dumpxml
and define work for datacenters in folders.

https://bugzilla.redhat.com/show_bug.cgi?id=732676

And virtual hardware version 8.

with /etc/libvirt/libvirt.conf below:
uri_aliases = [
  "hail=qemu:///system",
  "sleet=qemu+ssh://root 9 115 122 57/system",
  "sam=qemu+unix:///system?socket=/var/run/libvirt/libvirt-sock",
]
Neither "virsh -c hailly" nor "hai" should result in matching "hail=qemu:///system"

Fix URI alias prefix matching when connecting
Signed-off-by: NWen Ruo Lv <lvroyce@linux.vnet.ibm.com>

If daemon is using SASL it reads client data into a cache. This cache is
big (usually 65KB) and can thus contain 2 or more messages. However,
on socket event we can dispatch only one message. So if we read two
messages at once, the second will not be dispatched as the socket event
goes away with filling the cache.
Moreover, when dispatching the cache we need to remember to take care
of client max requests limit.

If we are comparing storage pools we must skip comparing with
ourself, so that re-defining an existing pool works

* conf/storage_conf.c: Skip self when comparing

The qemu RBD driver needs access to the conn in order to get the secret
needed for connecting to the ceph cluster.
Signed-off-by: NSage Weil <sage@newdream.net>

Detected by Coverity. Leak introduced in commit 6cabc0b0.

* src/qemu/qemu_command.c: Clean up on failure.
Signed-off-by: NAlex Jia <ajia@redhat.com>

This patch does some cleanups to my previous startupPolicy patchset.

To support "managed" mode of host PCI device, we record the original
states (unbind_from_stub, remove_slot, and reprobe) so that could
reattach the device to host with original driver. But there is no XML
for theses attrs, and thus after daemon is restarted, we lose the
original states. It's easy to reproduce:

    1) virsh start domain
    2) virsh attach-device dom hostpci.xml (in 'managed' mode)
    3) service libvirtd restart
    4) virsh destroy domain

    You will see the device won't be bound to the original driver
if there was one.

This patch is to solve the problem by introducing internal XML
(won't be dumped to user, only dumped to status XML). The XML is:
    <origstates>
      <unbind/>
      <remove_slot/>
      <reprobe/>
    </origstates>

Which will be child node of <hostdev><source>...</souce></hostdev>.
(only for PCI device).

A new struct "virDomainHostdevOrigStates" is introduced for the XML,
and the according members are updated when preparing the PCI device.
And function "qemuUpdateActivePciHostdevs" is modified to honor
the original states. Use of qemuGetPciHostDeviceList is removed
in function "qemuUpdateActivePciHostdevs", and the "managed" value of
the device config is honored by the change. This fixes another problem
alongside:

    qemuGetPciHostDeviceList set the device as "managed" force
    regardless of whether the device is configured as "managed='yes'"
    or not in XML, which is not right.

Deal with the incompatible changes in the VirtualBox 4.1 API.

INetworkAdapter has its different AttachTo* method replaced by
a settable attachmentType property.

The maximum number of network adapters is now requestable per
chipset type.

The OpenMedium method got a bool parameter to request opening
a medium under a new IID.

Shared folders are handled as filesystems and can also be hotplugged.

privP->session->error_description is a list and in order to get the
complete error message all parts of the list should be concatenated.
xenapiSessionErrorHandler does this when its third parameter is NULL.
The current code discards all but the first part of the error message
resulting in a potentially incomplete error message.

This partly reverts 006be75e, that tried to avoid reporting
a (null) in the error message. The actual problem is more general in
returnErrorFromSession that might return NULL if there is no error.

Make sure that returnErrorFromSession return non-NULL always. Also
don't skip the last error message part.

- changed some return 1's to return -1
- changed if (rc) error checks to if (rc < 0)
- fixed some other minor convention violations

I might have missed some. Can fix in another patch or can respin
Signed-off-by: NRoopa Prabhu <roprabhu@cisco.com>
Reported-by: NEric Blake <eblake@redhat.com>
Reported-by: NLaine Stump <laine@laine.org>
Signed-off-by: NEric Blake <eblake@redhat.com>

When using the xml as below:
------------------------------------------------------
<devices>
  <emulator>/home/soulxu/data/work-code/qemu-kvm/x86_64-softmmu/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
    <driver name='qemu' type='qcow2'/>
    <source file='/home/soulxu/data/VM/images/linux.img'/>
    <target dev='vda' bus='virtio'/>
    <address type='drive' controller='0' bus='0' unit='0'/>
  </disk>
  <input type='mouse' bus='ps2'/>
  <graphics type='vnc' port='-1' autoport='yes'/>
  <video>
    <model type='cirrus' vram='9216' heads='1'/>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
  </video>
  <memballoon model='virtio'>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
  </memballoon>
</devices>
------------------------------------------------------

Then can't startup qemu, the error message as below:
virsh # start test-vm
error: Failed to start domain test-vm
error: internal error process exited while connecting to monitor: qemu-system-x86_64: -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3: PCI: slot 3 function 0 not available for virtio-balloon-pci, in use by virtio-blk-pci
qemu-system-x86_64: -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3: Device 'virtio-balloon-pci' could not be initialized

So adding check for bus type and address type. Only the address of pci type support by virtio bus.
Signed-off-by: NXu He Jie <xuhj@linux.vnet.ibm.com>

In hand-applying Josh and Sage's patch, I missed out on a break.

* src/conf/secret_conf.c (virSecretDefFree): Fix my botch.