The "dump-guest-core' option is new option for the machine type
(-machine pc,dump-guest-core) that controls whether the guest memory
will be marked as dumpable.

While testing this, I've found out that the value for the '-M' options
is not parsed correctly when additional parameters are used. However,
when '-machine' is used for the same options, it gets parsed as
expected. That's why this patch also modifies the parsing and creating
of the command line, so both '-M' and '-machine' are recognized. In
QEMU's help there is only mention of the 'machine parameter now with
no sign of the older '-M'.

Sometimes when guest machine crashes, coredump can get huge due to the
guest memory. This can be limited using madvise(2) system call and is
being used in QEMU hypervisor. This patch adds an option for configuring
that in the domain XML and related documentation.

This patch adds support for "-boot reboot-timeout=rb_time" that is
added in QEMU.

Whenever the guest machine fails to boot, new parameter (reboot-timeout)
controls whether it should reboot and after how many ms it should do so.

Docs included.

The DAC security driver silently ignored errors when parsing the DAC
label and used default values instead.

With a domain containing the following label definition:

<seclabel type='static' model='dac' relabel='yes'>
  <label>sdfklsdjlfjklsdjkl</label>
</seclabel>

the domain would start normaly but the disk images would be still owned
by root and no error was displayed.

This patch changes the behavior if the parsing of the label fails (note
that a not present label is not a failure and in this case the default
label should be used) the error isn't masked but is raised that causes
the domain start to fail with a descriptive error message:

virsh #  start tr
error: Failed to start domain tr
error: internal error invalid argument: failed to parse DAC seclabel
'sdfklsdjlfjklsdjkl' for domain 'tr'

I also changed the error code to "invalid argument" from "internal
error" and tweaked the various error messages to contain correct and
useful information.

supersede tedious statements getting cpu bitmap
from parameter cpumap by virBitmapNewData function
Signed-off-by: Nliguang <lig.fnst@cn.fujitsu.com>

This patch removes all commas after *_LAST sentinels in the enums.

This patch cleans up building the "-boot" parameter and while on that
fixes one inconsistency by modifying these things:

 - I completed the unfinished virDomainBootMenu enum by specifying
   LAST, declaring it and also declaring the TypeFromString and
   TypeToString parameters.
 - Previously mentioned TypeFromString and TypeToString are used when
   parsing the XML.
 - Last, but not least, visible change is that the "-boot" parameter
   is built and parsed properly:
    - The "order=" prefix is used only when additional parameters are
      used (menu, etc.).
    - It's rewritten in a way that other parameters can be added
      easily in the future (used in following patch).
    - The "order=" parameter is properly parsed regardless to where it
      is placed in the string (e.g. "menu=on,order=nc").
    - The "menu=" parameter (and others in the future) are created
      when they should be (i.e. even when bootindex is supported and
      used, but not when bootloader is selected).

Currently, we mark domain PAUSED (but not emit an event)
just before we issue 'stop' on monitor; This command can
take ages to finish, esp. when domain's doing a lot of
IO - users can enforce qemu to open files with O_DIRECT
which doesn't return from write() until data reaches the
block device. Having said that, we report PAUSED even if
domain is not paused yet.

The memmove to move elements in the dhcp hosts array when inserting
and deleting items was mistakenly basing the length of the copy on the
size of a virNetworkDHCPHostDefPtr rather than virNetworkDHCPHostDef,
with the expected disastrous results.

The memmove to delete an entry commits two errors - along with the
size of each element being wrong, it also omits some required
parentheses.

Move the 'Daemon' entry to the Miscellaneous section since its not a
networking driver or component.

These enums originally were put into the flags for virNetworkUpdate,
and when they were moved into their own enum, the numbers weren't
appropriately changed, causing the commands to start with value 2
instead of 1. This causes problems for things like ENUM_IMPL, which
wants a string for every value in the requested range, including those
not used in the enum.

Based exclusively on work by Eric Blake in a patch posted with the same
subject. However some modifications related to comments and my plans to
add another backend.

Added WITH_INTERFACE as the only automake variable deciding whether to
build the driver and using WITH_NETCF to identify that we're wanting to
use the netcf library as the backend.

* configure.ac: Added with_interface
* src/interface/netcf_driver.c: Renamed..
* src/interface/interface_backend_netcf.c: ..to this to match storage.
* src/interface/netcf_driver.h: Renamed..
* src/interface/interface_driver.h: ..to this.
* daemon/Makefile.am: Respect WITH_INTERFACE and WITH_NETCF.
* libvirt.spec.in: Add RPM support for --with-interface

Match upstream's naming of QEMU. There was a notice on the ML that said
the preferred spelling was QEMU a while back.

The cleanup path in virsh-edit helper was never reached when the edit
was successful leaking the document in memory as well as the temporary
file.

The path was freed before printing the error message, resulting in:
error : virSysinfoRead:773 : internal error Failed to execute command
(null)
But virCommandRun already gives a better error message.

* src/util/sysinfo.c (virSysinfoRead): Avoid overwriting error.

Commit f36309d6 added an export with no matching implementation;
probably a misspelling of an earlier version of the final addition
of virNetworkObjSetDefTransient.

* src/libvirt_private.syms (network_conf.h): Drop bogus
virNetworkSetDefTransient.

Commit aaa8ab3e added new static functions that are only used on Linux;
but commit 22acfdc7 didn't go far enough to fix compiler issues.

* src/nodeinfo.c (nodeSetMemoryParameterValue)
(nodeGetMemoryParameterValue): Conditionally compile based on use.

Commit ee3d3893 missed the fact that (unsigned char)<<(int)
is truncated to int, and therefore failed for any bitmap data
longer than four bytes.

Also, I failed to run 'make syntax-check' on my commit 4bba6579;
for whatever odd reason, ffs lives in a different header than ffsl.

* src/util/bitmap.c (virBitmapNewData): Use correct shift type.
(includes): Glibc (and therefore gnulib) decided ffs is in
<strings.h>, but ffsl is in <string.h>.
* tests/virbitmaptest.c (test5): Test it.

Commit 0fc89098 used functions only available on glibc, completely
botched 32-bit environments, and risked SIGBUS due to unaligned
memory access on platforms that aren't as forgiving as x86_64.

* bootstrap.conf (gnulib_modules): Import ffsl.
* src/util/bitmap.c (includes): Use <strings.h> for ffsl.
(virBitmapNewData, virBitmapToData): Avoid 64-bit assumptions and
non-portable functions.

The introduction of APIC EOI patches had a few little details that
could look better, so this patch fixes that and one more place in the
file as well (same problem).

When trying to get the value of a private secret, the code used
'operation denied' error. That error is specified as a error for
read-only connections trying to perform denied operation. The
following error seems more accurate.

To compare the difference:
 - BEFORE
error: operation secret is private forbidden for read only access

 - AFTER
error: Invalid secret: secret is private

Two changes are introduced in this patch:

 - The first change removes ATTRIBUTE_RETURN_CHECK from
   virNetDevBandwidthClear, because it was called with ignore_value
   always, anyway. The function is used even when it's not necessary
   to call it, just for cleanup purposes.

 - The second change is added ignoring of the command's exit status,
   since it may report an error even when run just as "to be sure we
   clean up" function. No libvirt errors are suppresed by this.

Two more problems in "run.in" made the syntax-check fail.

to fix "make syntax-check"

Found by http://honk.sigxcpu.org:8001/job/libvirt-syntax-check/

With this script you can run libvirt programs without needing to
install them first.  You just have to do for example:

  ./run ./tools/virsh [args ...]

If you are already in the tools/ subdirectory, then the following
command will also work:

  ../run ./virsh [...]

You can also run the C programs under valgrind like this:

  ./run valgrind [valgrind opts...] ./program

or under gdb:

  ./run gdb --args ./program

This also works with sudo (eg. if you need root access for libvirt):

  sudo ./run ./tools/virsh list --all

Derived from libguestfs and simplified.  The ./run script in
libguestfs is much more sophisticated:

https://github.com/libguestfs/libguestfs/blob/master/run.in

Commit 7a99b0ab adds a new RPC struct
but one of the members has different names in remote_protocol.x and
remote_protocol-struct breaking make check.

Commit 75b198b3 forgot to change
arguments of dummy qemuProcessInitNumaMemoryPolicy from char* to
virBitmapPtr.

Make syntax-check happy and smiling again.

Currently we search along the hard-coded names:
  SBINDIR "/libvirtd"
  SBINDIR "/libvirtd_dbg"
but if the environment variable $LIBVIRTD_PATH is set to the
name of the libvirtd binary, that is used instead.  Fix the
error message so it accurately reflects current behaviour
($PATH is NOT searched).

Commit 1ccf2227 forgot to
add the output to the augeas test

This patch fills in the first implementation for one of the
virNetworkUpdate sections. With this code, you can now add/delete/edit
<host> entries in a network's <ip> address <dhcp> element (by
specifying a section of VIR_NETWORK_SECTION_IP_DHCP_HOST).

If you pass in a parentIndex of -1, the code will automatically find
the one ip element that has a <dhcp> section and make the updates
there. Otherwise, you can specify an index >= 0, and libvirt will look
for that particular instance of <ip> in the network, and modify its
<dhcp> element. (This currently isn't very useful, because libvirt
only supports having dhcp information on a single IP address, but that
could change in the future).

When adding a new host entry
(VIR_NETWORK_UPDATE_COMMAND_ADD_(FIRST|LAST)), the existing entries
will be compared to the new entry, and if any non-empty attribute
matches, the add will fail. When updating an existing entry
(VIR_NETWORK_UPDATE_COMMAND_MODIFY), the mac address or name will be
used to find the existing entry, and other fields will only be updated
(note there is some potential for ambiguity here if you specify the
mac address from one entry and the name from another).  When deleting
an existing entry (VIR_NETWORK_UPDATE_COMMAND_DELETE), all non-empty
attributes in the supplied xml arg will be compared - all of them must
match before libvirt will delete the host.

The xml should be a fully formed <host> element as it would appear in
a network definition, e.g. "<host mac=00:11:22:33:44:55 ip=10.1.23.22
name='testbox'/>" (when adding/updating, ip and one of mac|name is
required; when deleting, you can specify any one, two, or all
attributes, but they all must match the target element).

As with the update of any other section, you can choose to affect the
live config (with flag VIR_NETWORK_UPDATE_AFFECT_LIVE), the persistent
config (VIR_NETWORK_UPDATE_AFFECT_CONFIG), or both. If you've chosen
to affect the live config, those changes will take effect immediately,
with no need to destroy/restart the network.

An example of adding a host entry:

   virNetworkUpdate(net, VIR_NETWORK_UPDATE_COMMAND_ADD_LAST,
                     VIR_NETWORK_SECTION_IP_DHCP_HOST, -1,
                    "<host mac='00:11:22:33:44:55' ip='192.168.122.5'/>",
                    VIR_NETWORK_UPDATE_AFFECT_LIVE
                    | VIR_NETWORK_UPDATE_AFFECT_CONFIG);

To delete that same entry:

   virNetworkUpdate(net, VIR_NETWORK_UPDATE_COMMAND_DELETE,
                    VIR_NETWORK_SECTION_IP_DHCP_HOST, -1,
                    "<host mac='00:11:22:33:44:55'/>",
                    VIR_NETWORK_UPDATE_AFFECT_LIVE
                    | VIR_NETWORK_UPDATE_AFFECT_CONFIG);

(you could also delete it by replacing "mac='00:11:22:33:44:55'" with
"ip='192.168.122.5'".)

A user on IRC had accidentally killed all of his libvirt-started
dnsmasq instances (due to a buggy dnsmasq service script in Fedora
16), and had hoped that libvirtd would notice this on restart and
reload all the dnsmasq daemons (as it does with iptables
rules). Unfortunately this was not the case - as long as the network
object had a pid registered for dnsmasq and/or radvd, it assumed that
the processes were running.

This patch takes advantage of the new utility functions in
bridge_driver.c to do a "refresh" of all radvd and dnsmasq processes
started by libvirt each time libvirtd is restarted - this function
attempts to do a SIGHUP of each existing process, and if that fails,
it restarts the process, rebuilding all the associated config files
and commandline parameters in the process. This normally has no
effect, but will be useful in solving the occasional "odd situation"
without needing to take the drastic step of destroying/re-starting the
network.

The test driver does nothing outside of keeping track of each
network's config/state in the in-memory database maintained by
network_conf functions, so all we have to do is call the function that
updates the network's entry in the in-memory database.

Call the network_conf function that modifies the live/persistent/both
config, then refresh/restart dnsmasq/radvd if necessary, and finally
save the config in the proper place(s).

This patch also needed to uncomment a few utility functions that were
added inside #if 0 in the previous commit (to avoid compiler errors
due to unreferenced static functions).

This patch splits the starting of dnsmasq and radvd into multiple
files, and adds new networkRefreshXX() and networkRestartXX()
functions for each. These new functions are currently commented out
because they won't be used until the next commit, and the compile options
require all static functions to be used.

networkRefreshXX() - rewrites any file-based config for dnsmasq/radvd,
and sends SIGHUP to the process to make it reread its config. If the
program isn't already running, it's just started.

networkRestartXX() - kills the given program, waits for it to exit
(see the comments in the function networkKillDaemon()), then calls
networkStartXX().

This commit is here mostly as a checkpoint to verify no change in
functional behavior after refactoring networkStartXX() functions to
fit in with these new functions.

virNetworkObjUpdate takes care of all virNetworkUpdate-related changes
to the data stored in the in-memory virNetworkObj list. It should be
called by network drivers that use this in-memory list.

virNetworkObjUpdate *does not* take care of updating any disk-based
copies of the config, nor does it perform any other operations
necessary to have the new config data take effect (e.g. it won't
re-write dnsmasq host files, nor will it send a SIGHUP to dnsmasq) -
those things should all be taken care of in the network driver
function that calls virNetworkObjUpdate (assuming that it returns
success).

These new functions are highly inspired by those in domain_conf.c (but
not identical), and are intended to make it simpler to update the
various combinations of live/persistent network configs.

The network driver wasn't previously as careful about the separation
between the live "status" in network->def and the persistent "config"
in network->newDef (or sometimes in network->def). This series
attempts to remedy some of that, but probably doesn't go all the way
(enough to get these functions working and enable continued work on
virNetworkUpdate though).

bridge_driver.c and test_driver.c were updated in a few places to take
advantage of the new functions and/or account for changes in argument
lists.