This patch adds cpuset cgroup support for LXC.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Intend to reduce the redundant code,use virNumaSetupMemoryPolicy
to replace virLXCControllerSetupNUMAPolicy and
qemuProcessInitNumaMemoryPolicy.

This patch also moves the numa related codes to the
file virnuma.c and virnuma.h
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Compilation error when WITH_GNUTLS is 0, introduced in commit d5e83ad9.

Allow lxc using the advisory nodeset from querying numad,
this means if user doesn't specify the numa nodes that
the lxc domain should assign to, libvirt will automatically
bind the lxc domain to the advisory nodeset which queried from
numad.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

qemuGetNumadAdvice will be used by LXC driver, rename
it to virNumaGetAutoPlacementAdvice and move it to virnuma.c
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

The "dtb" option sets the filename for the device tree.
If without this option support, "-dtb file" will be converted into
<qemu:commandline> in domain XML file.
For example, '-dtb /media/ram/test.dtb' will be converted into
  <qemu:commandline>
    <qemu:arg value='-dtb'/>
    <qemu:arg value='/media/ram/test.dtb'/>
  </qemu:commandline>

This is not very friendly.
This patchset add special <dtb> tag like <kernel> and <initrd>
which is easier for user to write domain XML file.
  <os>
    <type arch='ppc' machine='ppce500v2'>hvm</type>
    <kernel>/media/ram/uImage</kernel>
    <initrd>/media/ram/ramdisk</initrd>
    <dtb>/media/ram/test.dtb</dtb>
    <cmdline>root=/dev/ram rw console=ttyS0,115200</cmdline>
  </os>
Signed-off-by: NEric Blake <eblake@redhat.com>

When building with --without-libvirtd and udev support is detected we
will fail to build with the following error:
    node_device/node_device_udev.c:1608:37: error: unknown type name
        'virStateInhibitCallback'

To prevent confusion with configure's popular name
for a file, rename conftest.c to test_conf.c which
is consistent with the invoking test_conf.sh
Signed-off-by: NGene Czarcinski <gene@czarc.net>

virStorageBackendRBDRefreshPool() first allocates an array big enough
to hold 1024 names, then calls rbd_list(), which returns ERANGE if the
array isn't big enough. When that happens, the VIR_ALLOC_N is called
again with a larger size. Unfortunately, the original array isn't
freed before allocating a new one.

There was a 2 word sentence 'remote server' which is a left-over
from copy and paste.

Because of a wrong copy and paste, the documentation was saying that
'path' is the path to a block device node while it's a path to a
directory.

The LXC controller is closing loop devices as soon as the
container has started. This is fine if the loop device
was setup as a mounted filesystem, but if we're just passing
through the loop device as a disk, nothing else is keeping
it open. Thus we must keep the loop device FDs open for as
long the libvirt_lxc process is running.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Currently the LXC controller creates the cgroup, configures the
resources and adds the task all in one go. This is not sufficiently
flexible for the forthcoming NBD integration. We need to make sure
the NBD process gets into the right cgroup immediately, but we can
not have limits (in particular the device ACL) applied at the point
where we start qemu-nbd. So create a virLXCCgroupCreate method
which creates the cgroup and adds the current task to be called
early, and leave virLXCCgroupSetup to only do resource config.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

When dispatching an RPC API call, setup the current identity to
hold the identity of the network client associated with the
RPC message being dispatched. The setting is thread-local, so
only affects the API call in this thread
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Add APIs which allow creation of a virIdentity from the info
associated with a virNetServerClientPtr instance. This is done
based on the results of client authentication processes like
TLS, x509, SASL, SO_PEERCRED
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

If no user identity is available, some operations may wish to
use the system identity. ie the identity of the current process
itself. Add an API to get such an identity.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

To allow any internal API to get the current identity, add APIs
to associate a virIdentityPtr with the current thread, via a
thread local
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Introduce a local object virIdentity for managing security
attributes used to form a client application's identity.
Instances of this object are intended to be used as if they
were immutable, once created & populated with attributes
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

A socket object has various pieces of security data associated
with it, such as the SELinux context, the SASL username and
the x509 distinguished name. Add new APIs to virNetServerClient
and related modules to access this data.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Commit 82d5fe54

    qemu: check backing chains even when cgroup is omitted

added backing file checks just before the code that removes optional
disks if they are not present. However, the backing chain code fails in
case the disk file does not exist, which makes qemuProcessStart fail
regardless on configured startupPolicy.

Note that startupPolicy implementation is still wrong after this patch
since it only check the first file in a possible chain. It should rather
check the complete backing chain. But this is an existing limitation
that can be solved later. After all, startupPolicy is most useful for
CDROM images and they won't make use of backing files in most cases.

QEMU 1.3 and newer support an alternative URI-based syntax to specify
the location of an NBD server.  Libvirt can keep on using the old
syntax in general, but only the URI syntax supports IPv6 addresses.

The URI syntax also supports relative paths to Unix sockets.  These
should never be used but aren't explicitly blocked either by the parser,
so support it just in case.

The URI syntax is intentionally compatible with Gluster's, and the
code can be reused.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

This reuses the XML format that was introduced for Gluster.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

These are supported by nbd-server and by the NBD server that QEMU
embeds for live image access.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

Move the code to an external function, and structure it to prepare
the addition of new features in the next few patches.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

Enable more testing of NBD parsing, to ensure rewrites work.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

We've already scrubbed for comparisons of 'uid_t == -1' (which fail
on platforms where uid_t is a u16), but another one snuck in.

* src/util/virutil.c (virSetUIDGIDWithCaps): Correct uid comparison.
* cfg.mk (sc_prohibit_risky_id_promotion): New rule.

QEMU added -drive in 2007, and NBD in 2008.  Both appeared first in
release 0.10.0.  Thus the code to support network disks without -drive
is dead, and in fact it incorrectly escapes commas.  Drop it.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

After we switched to C99 initialization, I noticed there were many
places where the specification of .flags parameter differed.  After
going through many options and deciding whether to unify the
initialization to be '.flags = 0' or '.flags = VSH_OFLAG_NONE', I
realized both can be removed and it makes the code easier to go
through.

According to the man page, the memspec parameter should have the
'--memspec' option mandatory and this is as close as we can get to
that.  What this change does is explained below.

man virsh:

snapshot-create-as ... [[--live] [--memspec memspec]]

virsh help snapshot-create-as before this patch:

  SYNOPSIS
    snapshot-create-as ... [<memspec>] ...
...
  OPTIONS
    [--memspec] <string> ...

virsh help snapshot-create-as after this patch:

  SYNOPSIS
    snapshot-create-as ... [--memspec <string>] ...
...
  OPTIONS
    --memspec <string> ...

The vshInit initializes ctl->debug by which vshDebug (which is also
called in vshParseArgv) decides whether to print out the message or
not.

When getting CPUs' information, it assumes that CPU indexes
are not contiguous. But for ppc64 platform, CPU indexes are not
contiguous because SMT is needed to be disabled, so CPU information
is not right on ppc64 and vpuinfo, vcpupin can't work corretly.

This patch is to remove the assumption to be compatible with ppc64.

Test:
   4 vcpus are assigned to one VM and execute vcpuinfo command.

   Without patch: There is only one vcpu informaion can be listed.
   With patch: All vcpus' information can be listed correctly.
Signed-off-by: NLi Zhang <zhlcindy@linux.vnet.ibm.com>

The text version
of LGPLv2.1 available at
http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt is slightly
different from COPYING.LIB:
- several paragraphs were rewrapped
- the FSF address has changed, so the license has been changed to
  indicate the newer address

I've checked that there are no changes in the license text apart from
the updated address, which is what I want to fix with this commit.

Signed-off-by: NYanbing Du <ydu@redhat.com>

This patch adds auditing of resources used by Virtio RNG devices. Only
resources on the local filesystems are audited.

The audit logs look like:

For the 'random' backend:
type=VIRT_RESOURCE msg=audit(1363099126.643:31): pid=995252 uid=0 auid=4294967295 ses=4294967295 msg='virt=kvm resrc=rng reason=start vm="qcow-test" uuid=118733ed-b658-3e22-a2cb-4fe5cb3ddf79 old-rng="?" new-rng="/dev/random": exe="/home/pipo/libvirt/daemon/.libs/libvirtd" hostname=? addr=? terminal=pts/0 res=success'

For local character device source:
type=VIRT_RESOURCE msg=audit(1363100164.240:96): pid=995252 uid=0 auid=4294967295 ses=4294967295 msg='virt=kvm resrc=rng reason=start vm="qcow-test" uuid=118733ed-b658-3e22-a2cb-4fe5cb3ddf79 old-rng="?" new-rng="/tmp/unix.sock": exe="/home/pipo/libvirt/daemon/.libs/libvirtd" hostname=? addr=? terminal=pts/0 res=success'

Adding test cases for virtio-scsi and virtio-rng. Since ccw is covering
the superset of the s390 bus handling, these are deemed to be sufficient.
Signed-off-by: NViktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

Newer versions of QEMU support virtio-scsi and virtio-rng devices
on the virtio-s390 and ccw buses. Adding capability detection,
address assignment and command line generation for that.
Signed-off-by: NViktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

QEMU_CAPS_VIRTIO_SCSI_PCI implies that virtio-scsi is only supported
for the PCI bus, which is not the case. Remove the _PCI suffix.
Signed-off-by: NViktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

My commit 7a2e845a (and its
prerequisites) managed to effectively ignore the
clear_emulator_capabilities setting in qemu.conf (visible in the code
as the VIR_EXEC_CLEAR_CAPS flag when qemu is being exec'ed), with the
result that the capabilities are always cleared regardless of the
qemu.conf setting. This patch fixes it by passing the flag through to
virSetUIDGIDWithCaps(), which uses it to decide whether or not to
clear existing capabilities before adding in those that were
requested.

Note that the existing capabilities are *always* cleared if the new
process is going to run as non-root, since the whole point of running
non-root is to have the capabilities removed (it's still possible to
maintain individual capabilities as needed using the capBits argument
though).