We publish libvirt-api.xml for others to use, and in fact, the
libvirt-python bindings use it to generate python constants that
correspond to our enum values.  However, we had an off-by-one bug
that any enum that relied on C's rules for implicit initialization
of the first enum member to 0 got listed in the xml as having a
value of 1 (and all later members of the enum were equally
botched).

The fix is simple - since we add one to the previous value when
encountering an enum without an initializer, the previous value
must start at -1 so that the first enum member is assigned 0.

The python generator code has had the off-by-one ever since DV
first wrote it years ago, but most of our public enums were immune
because they had an explicit = 0 initializer.  The only affected
enums are:
- virDomainEventGraphicsAddressType (such as
VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV4), since commit 987e31ed
(libvirt v0.8.0)
- virDomainCoreDumpFormat (such as VIR_DOMAIN_CORE_DUMP_FORMAT_RAW),
since commit 9fbaff00 (libvirt v1.2.3)
- virIPAddrType (such as VIR_IP_ADDR_TYPE_IPV4), since commit
03e0e79e (not yet released)

Thanks to Nehal J Wani for reporting the problem on IRC, and
for helping me zero in on the culprit function.

* docs/apibuild.py (CParser.parseEnumBlock): Fix implicit enum
values.
Signed-off-by: NEric Blake <eblake@redhat.com>

libxl does not support save, restore, or migrate on all architectures,
notably ARM.  Detect whether libxl supports these operations using
LIBXL_HAVE_NO_SUSPEND_RESUME.  If not supported, drop advertisement of
<migration_features>.

Found by Ian Campbell while improving Xen's OSSTEST infrastructure

http://lists.xen.org/archives/html/xen-devel/2014-06/msg02171.html

Since commit d86c876a we are using
guestfwd=tcp:IP:PORT,chardev=ID for guestfwd specification, however,
that has not changed in qemu, so guestfwd does not work since.

Apart from that, guestfwd is not working with older qemu that doesn't
have QEMU_CAPS_DEVICE.

Both regressions exist since late 2009 and nobody found that (until
now), so I'm only fixing the first one.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1112066Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Allow people to build external bindings using the 'run' script
by defining the PKG_CONFIG_PATH var in it. eg to build Python
you could do

   ../libvirt/run python setup.py build
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The QEMU VNC client arg code has a long standing typo
of SASL_CONF_DIR when it should be SASL_CONF_PATH for
the env variable name.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

When creating a new disk mirror the new struct is stored in a separate
variable until everything went well. The removed hunk would actually
remove existing mirror information for example when the api would be run
if a mirror still exists.

The function headers contain type on the same line as the name. When
combined with usage of ATTRIBUTE_UNUSED, the function headers were very
long. Shorten them by breaking the line after the type.

Some of the functions in the storage driver had their headers formatted
incorrectly.

virSecurityManagerSetDiskLabel and virSecurityManagerRestoreDiskLabel
don't have complementary semantics. Document the semantics to avoid
possible problems.

I'm going to add functions that will deal with individual image files
rather than whole disks. Rename the security function to make room for
the new one.

Rename them to comply with the naming policy.

As pointed by Yuri Chornoivan in transifex:
https://fedora.transifex.com/projects/p/libvirt/translate/#uk/strings/27026506

The new VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE flag for
virConnectCompareCPU can be used to get an error
(VIR_ERR_CPU_INCOMPATIBLE) describing the incompatibility instead of the
usual VIR_CPU_COMPARE_INCOMPATIBLE return code.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

When CPU comparison APIs return VIR_CPU_COMPARE_INCOMPATIBLE, the caller
has no clue why the CPU is considered incompatible with host CPU. And in
some cases, it would be nice to be able to get such info in a client
rather than having to look in logs.

To achieve this, the APIs can be told to return VIR_ERR_CPU_INCOMPATIBLE
error for incompatible CPUs and the reason will be described in the
associated error message.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Only types and macros are documented in libvirt.h, APIs are documented
in the *.c file they are implemented in.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Let's just open the file right away and deal with errors. Moreover,
there's no reason to forbid logging to, e.g., a pipe.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Fix missing whitespace when parsing 'managed' attribute.
Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

Currently, only LXC has hostdev mode 'capabilities' support,
so the other drivers should forbid to define it in XML.
The hostdev mode check is added to devicesPostParseCallback()
for each hypervisor driver.

But there are some drivers lack function devicesPostParseCallback(),
so only add check for qemu, libxl, openvz, uml, xen, xenapi.
Signed-off-by: NJincheng Miao <jmiao@redhat.com>

The parent directory doesn't necessarily need to be stored after we
don't mangle the path stored in the image. Remove it and tweak the code
to avoid using it.

Store backing chain paths as non-canonical. The canonicalization step
will be already taken. This will allow to avoid storing unnecessary
amounts of data.

After we don't test relative paths, remove even more unnecessary cruft
from the test code.

libvirt always uses an absolute path to address the top image of an
image chain. Our storage test tests also the relative path which won't
ever be used. Additionally it makes the test more complicated.

Now that we store only relative names in virStorageSource's member
relPath the backingRelative member is obsolete. Remove it and adapt the
code to the removal.

Separately remove the now unused variable.

Due to various refactors and compatibility with the virstoragetest the
relPath field of the virStorageSource structure was always filled either
with the relative name or the full path in case of absolutely backed
storage. Return its original purpose to store only the relative name of
the disk if it is backed relatively and tweak the tests.

Now that we changed ordering of the stored metadata so that the backing
store is described by the child element the test should reflect this
change too.

Remove the expected backing store field as it's actually described by
the next element in the backing chain, so there's no need for
duplication.

This patch introduces a function that will allow us to resolve a
relative difference between two elements of a disk backing chain. This
function will be used to allow relative block commit and block pull
where we need to specify the new relative name of the image to qemu.

This patch also adds unit tests for the function to verify that it works
correctly.

Signed-off-by: NChen Hanxiao <chenhanxiao@cn.fujitsu.com>

As we are doing with the enum structures, a cleanup in "src/qemu/"
directory was done now. All the enums that were defined in the
header files were converted to typedefs in this directory. This
patch includes all the adjustments to remove conflicts when you do
this kind of change. "Enum-to-typedef"'s conversions were made in
"src/qemu/qemu_{capabilities, domain, migration, hotplug}.h".
Signed-off-by: NJulio Faracco <jcfaracco@gmail.com>

Commit 9b8d6e1e missed updating the libvirt version which
introduced support for domainMigrate*3Params functions.

Don't free individual JSON array members as the array will be freed at
the end. This may potentially lead to a crash although it didn't crash
on my setup.

Introduced by commit ba513982

Don't leak the temporary variables on success if NULL is returned
for that field.

Don't dereference NULL on failure to allocate some of the temporaries.

Introduced by commit 990c3b65

Introduced by commit 2bdb8b96

Variables/fields named 'interface' clash with system
header symbols on some platforms.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

When looking for a port to allocate, the port allocator didn't take in
consideration ports that are statically set by the user.  Defining
these two graphics elements in the XML would cause an error, as the
port allocator would try to use the same port for the spice graphics
element:

    <graphics type='spice' autoport='yes'/>
    <graphics type='vnc' port='5900' autoport='no'/>

The new *[pP]ortReserved variables keep track of the ports that were
successfully tracked as used by the port allocator but that weren't
bound.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1081881Signed-off-by: NGiuseppe Scrivano <gscrivan@redhat.com>

virPortAllocatorSetUsed permits to set a port as already used and
prevent the port allocator to use it without any attempt to bind it.
Signed-off-by: NGiuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>