These disk devices are created for container,
the owner should be the root user of container.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Since mknod in container is forbidden, we should setup disks
on host side.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Many applications use /dev/tty to read from stdin.
e.g. zypper on openSUSE.

Let's create this device node to unbreak those applications.
As /dev/tty is a synonym for the current controlling terminal
it cannot harm the host or any other containers.
Signed-off-by: NRichard Weinberger <richard@nod.at>

Add some debug logging of LXC wait/continue messages
and uid/gid map update code.

These files are created for container,
the owner should be the root user of container.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Since these devices are created for the container.
the owner should be the root user of the container.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

container will create /dev/pts directory in /dev.
the owner of /dev should be the root user of container.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Since these tty devices will be used by container,
the owner of them should be the root user of container.

This patch also adds a new function virLXCControllerChown,
we can use this general function to change the owner of
files.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

user namespace doesn't allow to create devices in
uninit userns. We should create devices on host side.

We first mount tmpfs on dev directroy under state dir
of container. then create devices under this dev dir.

Finally in container, mount the dev directroy created
on host to the /dev/ directroy of container.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

This patch introduces new helper function
virLXCControllerSetupUserns, in this function,
we set the files uid_map and gid_map of the init
task of container.

lxcContainerSetID is used for creating cred for
tasks running in container. Since after setuid/setgid,
we may be a new user. This patch calls lxcContainerSetUserns
at first to make sure the new created files belong to
right user.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

Found with 'git grep "= 1"'.

The comments is for virLXCControllerSetupPrivateNS.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

We forgot to free the mount_options.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

After commit c131525b
"Auto-add a root <filesystem> element to LXC containers on startup"
for libvirt lxc, root must be existent.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

The LXC driver can already configure <disk> or <filesystem>
devices to use the loop device. This extends it to also allow
for use of the NBD device, to support non-raw formats.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The current code for setting up loop devices to LXC disks first
does a switch() based on the disk format, then looks at the
disk driver name. Reverse this so it first looks at the driver
name, and then the disk format. This is more useful since the
list of supported disk formats depends on what driver is used.

The code for setting loop devices for LXC fs entries also needs
to have the same logic added, now the XML schema supports this.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The source code base needs to be adapted as well. Some files
include virutil.h just for the string related functions (here,
the include is substituted to match the new file), some include
virutil.h without any need (here, the include is removed), and
some require both.

http://www.uhv.edu/ac/newsletters/writing/grammartip2009.07.01.htm
(and several other sites) give hints that 'onto' is best used if
you can also add 'up' just before it and still make sense. In many
cases in the code base, we really want the two-word form, or even
a simplification to just 'on' or 'to'.

* docs/hacking.html.in: Use correct 'on to'.
* python/libvirt-override.c: Likewise.
* src/lxc/lxc_controller.c: Likewise.
* src/util/virpci.c: Likewise.
* daemon/THREADS.txt: Use simpler 'on'.
* docs/formatdomain.html.in: Better usage.
* docs/internals/rpc.html.in: Likewise.
* src/conf/domain_event.c: Likewise.
* src/rpc/virnetclient.c: Likewise.
* tests/qemumonitortestutils.c: Likewise.
* HACKING: Regenerate.
Signed-off-by: NEric Blake <eblake@redhat.com>

Instead of calling virCgroupForDomain every time we need
the virCgrouPtr instance, just do it once at Vm startup
and cache a reference to the object in virLXCDomainObjPrivatePtr
until shutdown of the VM. Removing the virCgroupPtr from
the LXC driver state also means we don't have stale mount
info, if someone mounts the cgroups filesystem after libvirtd
has been started
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

This allows a container-type domain to have exclusive access to one of
the host's NICs.

Wire <hostdev caps=net> with the lxc_controller - when moving the newly
created veth devices into a new namespace, also look for any hostdev
devices that should be moved. Note: once the container domain has been
destroyed, there is no code that moves the interfaces back to the
original namespace. This does happen, though, probably due to default
cleanup on namespace destruction.
Signed-off-by: NBogdan Purcareata <bogdan.purcareata@freescale.com>

Move the xmlopt and caps arguments to the end of the argument list.

This patch is the result of running:

for i in $(git ls-files | grep -v html | grep -v \.po$ ); do
  sed -i -e "s/virDomainXMLConf/virDomainXMLOption/g" -e "s/xmlconf/xmlopt/g" $i
done

and a few manual tweaks.

Early on kernel support for private devpts was not widespread,
so we had compatibiltiy codepaths. Such old kernels are not
seriously used for LXC these days, so the compat code can go
away
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Currently the lxc controller sets up the devpts instance on
$rootfsdef->src, but this only works if $rootfsdef is using
type=mount. To support type=block or type=file for the root
filesystem, we must use /var/lib/libvirt/lxc/$NAME.devpts
for the temporary devpts mount in the controller

The 'nodeset' variable was never initialized, causing a later
VIR_FREE(nodeset) to free uninitialized memory.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

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>

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>

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>

The naming used in the RPC protocols for the LXC monitor and
lock daemon confused the script used to generate systemtap
helper functions. Rename the LXC monitor protocol symbols to
reduce confusion. Adapt the gensystemtap.pl script to cope
with the LXC monitor / lock daemon naming conversions.

This has no functional impact on RPC wire protocol, since
names are only used in the C layer
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The virCaps structure gathered a ton of irrelevant data over time that.
The original reason is that it was propagated to the XML parser
functions.

This patch aims to create a new data structure virDomainXMLConf that
will contain immutable data that are used by the XML parser. This will
allow two things we need:

1) Get rid of the stuff from virCaps

2) Allow us to add callbacks to check and add driver specific stuff
after domain XML is parsed.

This first attempt removes pointers to private data allocation functions
to this new structure and update all callers and function that require
them.

When setting up disks with loop devices for LXC, one of the
switch cases was missing a 'break' causing it to fallthrough
to an error condition.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

By using a loopback device, disks backed by plain files can
be made available to LXC containers. We make no attempt to
auto-detect format if <driver type="raw"/> is not set,
instead we unconditionally treat that as meaning raw. This
is to avoid the security issues inherent with format
auto-detection
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Minor re-factoring of code for setting up loop devices in
the LXC controller
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Currently we rely on a VIR_ERROR message being logged by the
virRaiseError function to report LXC startup errors. This gives
the right message, but is rather ugly and can be truncated
if lots of log messages are written. Change the LXC controller
to explicitly print any virErrorPtr message to stderr. Then
change the driver to skip over anything that looks like a log
message.

The result is that this

error: Failed to start domain busy
error: internal error guest failed to start: 2013-03-04 19:46:42.846+0000: 1734: info : libvirt version: 1.0.2
2013-03-04 19:46:42.846+0000: 1734: error : virFileLoopDeviceAssociate:600 : Unable to open /root/disk.raw: No such file or directory

changes to

error: Failed to start domain busy
error: internal error guest failed to start: Unable to open /root/disk.raw: No such file or directory
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>