The function virUnrefConnect() may call virReleaseConnect() to release
the dest connection, and the function virReleaseConnect() will call
conn->driver->close().

So the function virUnrefConnect() should be surrounded by
qemuDomainObjEnterRemoteWithDriver() and
qemuDomainObjExitRemoteWithDriver() to prevent possible deadlock between
two communicating libvirt daemons.

See commit f0c8e1cb for further details.
Signed-off-by: NWen Congyang <wency@cn.fujitsu.com>

* docs/formatdomain.html.in: Talk about <controller> and <address>
throughout.

Added new entries for Hudson, LCFG, Tivoli Provisioning Manager,
virt-what, and Zenoss.  Adjusted the existing entries for BuildBot
and vmware2libvirt.

In some circumstances, libvirtd would issue two STOPPED events after it
stopped a domain. This was because an EOF event can arrive after a qemu
process is killed but before qemuMonitorClose() is called.

qemuHandleMonitorEOF() should ignore EOF when the domain is not running.

I wasn't able to reproduce this bug directly, only after adding an
artificial sleep() into qemudShutdownVMDaemon().

A large number of return values used 'return (0)' instead
of simply 'return 0'. Remove all these redundant brackets
so the style is consistent throughout the file

* src/libvirt.c: Remove redundant brackets

The driver table only has 10 slots, but there are potentially
11 drivers that need activating. Improve the error message
when driver registration fails

* src/libvirt.c: Increase driver table size & improve errors

The virLibConnError() function (and related ones) do not correctly
report line number info. Turn them all into macros so line numbers
are reported correctly. Drop the connection object in all of them
since it is no longer used.

Also from the virLibConnWarning() equivalents completely. Now
that the Xen driver is running 100% inside libvirtd, those
codepaths for secondary drivers cannot be reached.

* src/libvirt.c: Replace error functions with macros

* docs/formatdomain.html.in: Talk about <sysinfo> throughout.

* .gnulib: Update to latest, for sigpipe and sigaction modules.
* bootstrap.conf (gnulib_modules): Add siaction, sigpipe, strerror_r.
* tools/virsh.c (vshSetupSignals) [!SIGPIPE]: Delete, now that
gnulib guarantees it.
(SA_SIGINFO): Define for mingw fallback.
* src/util/virterror.c (virStrerror): Simplify, now that gnulib
guarantees the POSIX interface.
* configure.ac (AC_CHECK_FUNCS_ONCE): Drop redundant check.
(AM_PROG_CC_STDC): Move earlier, to keep autoconf happy.

VIR_ERR_OPERATION_INVALID means that the operation is not valid
for the current state of the involved object.

VIR_ERR_INVALID_* is meant for invalid pointers only.

The public object is called NWFilter but the corresponding private
object is called NWFilterPool. I don't see compelling reasons for this
Pool suffix. One might argue that an NWFilter is a "pool" of rules, etc.

Remove the Pool suffix from NWFilterPool. No functional change included.

Otherwise apibuild.py complains about it.

"Network Filtering" is not directly related to "Networks".

Suggested by Daniel P. Berrange.

Fixes regression introduced in commit 22115181, where all qemu 0.12.x
fails to start, as does qemu 0.13.x lacking the pci-assign device.
Prior to 22115181, the code was just ignoring a non-zero exit status
from the qemu child, but the virCommand code checked this to avoid
masking any other issues, which means the real bug of provoking
non-zero exit status has been latent for a longer time.

* src/qemu/qemu_capabilities.c (qemuCapsExtractVersionInfo): Check
for -device driver,? support.
(qemuCapsExtractDeviceStr): Avoid failure if all probed devices
are unsupported.
Reported by Ken Congyang.

https://bugzilla.redhat.com/show_bug.cgi?id=620363

When using -incoming stdio or -incoming exec:, qemu keeps the
stdin fd open long after the migration is complete.  Not to
mention that exec:cat is horribly inefficient, by doubling the
I/O and going through a popen interface in qemu.

The new -incoming fd: of qemu 0.12.0 closes the fd after using
it, and allows us to bypass an intermediary cat process for
less I/O.

* src/qemu/qemu_command.h (qemuBuildCommandLine): Add parameter.
* src/qemu/qemu_command.c (qemuBuildCommandLine): Support
migration via fd: when possible.  Consolidate migration handling
into one spot, now that it is more complex.
* src/qemu/qemu_driver.c (qemudStartVMDaemon): Update caller.
* tests/qemuxml2argvtest.c (mymain): Likewise.
* tests/qemuxml2argvdata/qemuxml2argv-restore-v2-fd.args: New file.
* tests/qemuxml2argvdata/qemuxml2argv-restore-v2-fd.xml: Likewise.

Support for this is included in qemu and seabios from upstream git.

Currently, boot order can be specified per device class but there is no
way to specify exact disk/NIC device to boot from.

This patch adds <boot order='N'/> element which can be used inside
<disk/> and <interface/>. This is incompatible with the older os/boot
element. Since not all hypervisors support per-device boot
specification, new deviceboot flag is included in capabilities XML for
hypervisors which understand the new boot element. Presence of the flag
allows (but doesn't require) users to use the new style boot order
specification.

* tools/libvirt-guests.init.in: Rename...
* tools/libvirt-guests.init.sh: ...so that xgettext's language
detection via suffix will work.
* po/POTFILES.in: Update all references.
* tools/Makefile.am (EXTRA_DIST, libvirt-guests.init): Likewise.

* tools/libvirt-guests.init.sh: Use only POSIX shell features, which
includes using gettext.sh for translation rather than $"".
* tools/Makefile.am (libvirt-guests.init): Supply a few more substitutions.
* po/POTFILES.in: Mark that libvirt-guests.init needs translation.
Signed-off-by: NEric Blake <eblake@redhat.com>

Before the security driver was refactored in d6623003 seclabeltest and
secaatest were basically the same. seclabeltest was meant for SELinux
and secaatest for AppArmor. Both tests exited early when the specific
security driver backend wasn't enabled.

With the new security manager trying to initialize a disabled security
driver backend is an error that can't be distinguished from other errors
anymore. Therefore, the updated seclabeltest just asks for the first
available backend as this will always work even with SELinux and AppArmor
backend being disabled due to the new Nop backend.

Remove the obsolete secaatest and compile and run the seclabeltest
unconditional.

This fixes make check on systems that support AppArmor.

There is no ENABLE_SECDRIVER_APPARMOR.

Display or set unlimited values for memory parameters. Unlimited is
represented by INT64_MAX in memory cgroup.
Signed-off-by: NNikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Reported-by: NJustin Clift <jclift@redhat.com>

* .gnulib: Update, for sc_prohibit_strcmp fix.
* cfg.mk: Adjust copyright; the only FSF portions come from when
this file was copied from coreutils.
(sc_prohibit_strncmp): Copy bug-fixes from sc_prohibit_strcmp.
* .x-sc_prohibit_strcmp: Delete, now that rule is smarter.
* .x-sc_prohibit_strncmp: Likewise.
* Makefile.am (syntax_check_exceptions): Track deletion.

virLibConnError already includes __FUNCTION__ in its output, so we
were redundant.  Furthermore, clang warns that __FUNCTION__ is not
a string literal (at least __FUNCTION__ will never contain %, so
it was not a security risk).

* src/datatypes.c: Replace __FUNCTION__ with a descriptive string.

This is in response to a request in:

   https://bugzilla.redhat.com/show_bug.cgi?id=665293

In short, under heavy load, it's possible for qemu's networking to
lock up due to the tap device's default 1MB sndbuf being
inadequate. adding "sndbuf=0" to the qemu commandline -netdevice
option will alleviate this problem (sndbuf=0 actually sets it to
0xffffffff).

Because we must be able to explicitly specify "0" as a value, the
standard practice of "0 means not specified" won't work here. Instead,
virDomainNetDef also has a sndbuf_specified, which defaults to 0, but
is set to 1 if some value was given.

The sndbuf value is put inside a <tune> element of each <interface> in
the domain. The intent is that further tunable settings will also be
placed inside this element.

     <interface type='network'>
       ...
       <tune>
         <sndbuf>0</sndbuf>
       ...
       </tune>
     </interface>

This patch is in response to

  https://bugzilla.redhat.com/show_bug.cgi?id=643050

The existing libvirt support for the vhost-net backend to the virtio
network driver happens automatically - if the vhost-net device is
available, it is always enabled, otherwise the standard userland
virtio backend is used.

This patch makes it possible to force whether or not vhost-net is used
with a bit of XML. Adding a <driver> element to the interface XML, eg:

     <interface type="network">
       <model type="virtio"/>
       <driver name="vhost"/>

will force use of vhost-net (if it's not available, the domain will
fail to start). if driver name="qemu", vhost-net will not be used even
if it is available.

If there is no <driver name='xxx'/> in the config, libvirt will revert
to the pre-existing automatic behavior - use vhost-net if it's
available, and userland backend if vhost-net isn't available.

We try to use that command first when setting a VNC/SPICE password. If
that doesn't work we fallback to the legacy VNC only password

Allow an expiry time to be set, if that doesn't work, throw an error
if they try to use SPICE.

Change since v1:
- moved qemuInitGraphicsPasswords to qemu_hotplug, renamed
  to qemuDomainChangeGraphicsPasswords.
- updated what looks like a typo (that appears to work anyway) in
  initial patch from Daniel:
    - ret = qemuInitGraphicsPasswords(driver, vm,
    -                                 VIR_DOMAIN_GRAPHICS_TYPE_SPICE,
    -                                 &vm->def->graphics[0]->data.vnc.auth,
    -                                 driver->vncPassword);
    + ret = qemuInitGraphicsPasswords(driver, vm,
    +                                 VIR_DOMAIN_GRAPHICS_TYPE_SPICE,
    +                                 &vm->def->graphics[0]->data.spice.auth,
    +                                 driver->spicePassword);

Based on patch by Daniel P. Berrange <berrange@redhat.com>.