Improve error reporting and generating of SPICE command line arguments
according to the need to enable TLS. If TLS is disabled, there's no need
to pass the certificate dir to qemu.

This patch resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=953126

With this patch, if the autoport attribute is used, the code will
sensibly auto allocate the ports only if needed.

Ensure that all drivers implementing public APIs use a
naming convention for their implementation that matches
the public API name.

eg for the public API   virDomainCreate make sure QEMU
uses qemuDomainCreate and not qemuDomainStart
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

It will simplify later work if the sub-drivers have dedicated
APIs / field names. ie virNetworkDriver should have
virDrvNetworkOpen and virDrvNetworkClose methods
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The driver.h struct for node devices used an inconsistent
naming scheme 'DeviceMonitor' instead of the more usual
'NodeDeviceDriver'. Fix this everywhere it has leaked
out to.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The driver.h file has no consistent indentation usage across
all the typedefs. Attempts to vertically align struct field
members have also been inconsistently applied. Sanitize the
whitespace used for typedefs & remove all vertical alignment
from structs
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Ensure that the driver struct field names match the public
API names. For an API virXXXX we must have a driver struct
field xXXXX. ie strip the leading 'vir' and lowercase any
leading uppercase letters.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Ensure that the virDrvXXX method names exactly match
the public APIs virYYY method names. ie XXX == YYY.
Add a test case to prevent any regressions.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

A number of the remote procedure names did not match the
corresponding API names. For example, many lacked the
word 'CONNECT', others re-arranged the names. Update the
procedures so their names exactly match the API names.
Then remove the special case handling of these APIs in
the generator
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

There are many declared options in gendispatch.pl that were
no longer used. Those which were used were obscure '-b', '-k'
and '-d'. Switch to use --mode={debug|client|server}.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Later on this function will be used to do more sophisticated checks and
determination if port allocation is needed.

Switch the function from a bunch of ifs to a switch statement with
correct type and reflow some code.

Also fix comment in enum describing possible graphics types

Decrease size of qemuBuildGraphicsCommandLine() by splitting out
spice-related code into qemuBuildGraphicsVNCCommandLine().

This patch also fixes 2 possible memory leaks on error path in the code
that was split-out. The buffer containing the already generated options
and a listen address string could be leaked.

Also break a few very long lines and reflow code that fits now.

Decrease size of qemuBuildGraphicsCommandLine() by splitting out
spice-related code into qemuBuildGraphicsSPICECommandLine().

This patch also fixes 2 possible memory leaks on error path in the code
that was split-out. The buffer containing the already generated options
and a listen address string could be leaked.

Also break a few very long lines.

This is a better interface to choose accelerator than guessing whether
we should enable or disable kvm to get the right one.

Currently the RPC protocol files can contain annotations after
the protocol enum eg

   REMOTE_PROC_DOMAIN_SNAPSHOT_LIST_CHILDREN_NAMES = 247, /* autogen autogen priority:high */

This is not very extensible as the number of annotations grows.
Change it to use

    /**
     * @generate: both
     * @priority: high
     */
   REMOTE_PROC_DOMAIN_SNAPSHOT_LIST_CHILDREN_NAMES = 247,
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Refactoring done in 19c6ad9a didn't
correctly take into account the order cgroup limit modification needs to
be done in. This resulted into errors when decreasing the limits.

The operations need to take place in this order:

decrease hard limit
change swap hard limit

or

change swap hard limit
increase hard limit

This patch also fixes the check if the hard_limit is less than
swap_hard_limit to print better error messages. For this purpose I
introduced a helper function virCompareLimitUlong to compare limit
values where value of 0 is equal to unlimited. Additionally the check is
now applied also when the user does not provide all of the tunables
through the API and in that case the currently set values are used.

This patch resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=950478

When QEMU fails to start, libvirt read its error output and reports it
back in an error message. However, when libvirtd is configured to log
debug messages, one would get the following unhelpful garbage:

    virsh # start cd
    error: Failed to start domain cd
    error: internal error process exited while connecting to monitor: \
      2013-04-22 14:24:54.214+0000: 2194219: debug : virFileClose:72 : \
      Closed fd 21
    2013-04-22 14:24:54.214+0000: 2194219: debug : virFileClose:72 : \
      Closed fd 27
    2013-04-22 14:24:54.215+0000: 2194219: debug : virFileClose:72 : \
      Closed fd 3
    2013-04-22 14:24:54.215+0000: 2194220: debug : virExec:602 : Run \
      hook 0x7feb8f600bf0 0x7feb86ef9300
    2013-04-22 14:24:54.215+0000: 2194220: debug : qemuProcessHook:2507 \
      : Obtaining domain lock
    2013-04-22 14:24:54.216+0000: 2194220: debug : \
      virDomainLockProcessStart:170 : plugin=0x7feb780261f0 \
      dom=0x7feb7802a360 paused=1 fd=0x7feb86ef8ec4
    2013-04-22 14:24:54.216+0000: 2194220: debug : \
      virDomainLockManagerNew:128 : plugin=0x7feb780261f0 \
      dom=0x7feb7802a360 withResources=1
    2013-04-22 14:24:54.216+0000: 2194220: debug : \
      virLockManagerPluginGetDriver:297 : plugin=0x7feb780261f0
    2013-04-22 14:24:54.216+0000: 2194220: debug : \
      virLockManagerNew:321 : driver=0x7feb8ef08640 type=0 nparams=5 \
      params=0x7feb86ef8d60 flags=0
    2013-04-22 14:24:54.216+000

instead of (the output with this patch applied):

    virsh # start cd
    error: Reconnected to the hypervisor
    error: Failed to start domain cd
    error: internal error process exited while connecting to monitor: \
      char device redirected to /dev/pts/33 (label charserial0)
    qemu-system-x86_64: -drive file=/home/vm/systemrescuecd-x86-1.2.0.\
      iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw,cache=none: \
      could not open disk image /home/vm/systemrescuecd-x86-1.2.0.iso: \
      Permission denied

1. Handle invalid ULong prefix specified.
When parsing for @prefix as a ULong, a -2 can be returned
if the specification is not a valid ULong.

2.  Error out if address= is not specified.

3.  Merge netmask process/tests under family tests.

4. Max sure that prefix does not exceed maximum.
.
Signed-off-by: NGene Czarcinski <gene@czarc.net>

Create the utility function virSocketAddrGetIpPrefix() to
determine the prefix for this network.  The code in this
function was adapted from virNetworkIpDefPrefix().

Update virNetworkIpDefPrefix() in src/conf/network_conf.c
to use the new utility function.
Signed-off-by: NGene Czarcinski <gene@czarc.net>

The change in commit aed49863
was incomplete, missing a couple of cases of /system. This
caused failure to start VMs.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

libvirt/HACKING suggests omitting braces with a
single-line body; this patch fixes the coding style
problem for the Sheepdog storage backend driver.
Signed-off-by: NHarry Wei <harryxiyou@gmail.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

After discussions with systemd developers it was decided that
a better default policy for resource partitions is to have
3 default partitions at the top level

   /system   - system services
   /machine - virtual machines / containers
   /user    - user login session

This ensures that the default policy isolates guest from
user login sessions & system services, so a mis-behaving
guest can't consume 100% of CPU usage if other things are
contending for it.

Thus we change the default partition from /system to
/machine
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Wrong use of the parentheses causes "rc" always having a boolean value,
either "1" or "0", and thus we can't get the detailed error message
when it fails:

Before (I only have 1 node):
% virsh numatune f18 --nodeset 12
error: Unable to change numa parameters
error: unable to set numa tunable: Unknown error -1

After:
virsh numatune f18 --nodeset 12
error: Unable to change numa parameters
error: unable to set numa tunable: Invalid argument

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>

https://bugzilla.redhat.com/show_bug.cgi?id=922186

Commit d04916fa introduced a regression in audit quality - even
though the code was computing the proper escaped name for a
path, it wasn't feeding that escaped name on to the audit message.
As a result, /var/log/audit/audit.log would mention a pair of
fields class=path path=/dev/hpet instead of the intended
class=path path="/dev/hpet", which in turn caused ausearch to
format the audit log with path=(null).

* src/conf/domain_audit.c (virDomainAuditCgroupPath): Use
constructed encoding.
Signed-off-by: NEric Blake <eblake@redhat.com>

Also change its return value from int to bool.

Each bus is represented as an array of 32 8-bit integers
where each bit represents a PCI function and each byte represents
a PCI slot.

Uses just one bus so far.

Create a new function qemuPCIAddressValidate and call it everywhere
the user might supply an incorrect address:
* qemuCollectPCIAddress for domain definition
* qemuDomainPCIAddressEnsureAddr and ReleaseSlot for hotplug

Slot and function shouldn't be wrong at this point, since values
out of range should be rejected by the XML parser.

Change QEMU_PCI_ADDRESS_LAST_SLOT to the number of slots in the bus,
not the maximum slot value, to match QEMU_PCI_ADDRESS_LAST_FUNCTION
and rename them both to have _LAST at the end.

Use the same formatting as we do for XML in error and debug outputs.

Bus and domain need to be checked as well, otherwise we might
get false positives when searching for multi-function devices.

The error message reported when attempting to change/get persistent
configuration of a transient domain suggests that changes are being
made. Reword it to suit getter APIs too.

Before:
$ virsh vcpucount transient-domain --config
error: Requested operation is not valid: cannot change persistent config of a transient domain

After:
$ virsh vcpucount transient-domain --config
error: Requested operation is not valid: transient domains do not have any persistent config

Until now tranisent networks weren't really useful as libvirtd wasn't
able to remember them across restarts. This patch adds support for
loading status files of transient networks (that already were generated)
so that the status isn't lost.

This patch chops up virNetworkObjUpdateParseFile and turns it into
virNetworkLoadState and a few friends that will help us to load status
XMLs and refactors the functions that are loading the configs to use
them.

For consistency with other functions in PowerPC CPU driver, the two
functions are renamed as ppcUpdate and ppcDataFree, respectively.

The cpu_map.xml file is there to separate CPU model definitions from the
code. Having the only interesting data for PowerPC models only in the
source code. This patch moves this data to the XML file and removes the
hardcoded list completely.