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>

Use virNetworkGetDHCPLeases and virNetworkGetDHCPLeasesForMAC in virsh.

The new feature supports the follwing methods:

1. Retrieve leases info for a given virtual network

2. Retrieve leases info for given network interface

tools/virsh-domain-monitor.c
   * Introduce new command : net-dhcp-leases
     Example Usage: net-dhcp-leases <network> [mac]

   virsh # net-dhcp-leases --network default6
   Expiry Time          MAC address        Protocol  IP address                Hostname        Client ID or DUID
   -------------------------------------------------------------------------------------------------------------------
   2014-06-16 03:40:14  52:54:00:85:90:e2  ipv4      192.168.150.231/24        fedora20-test   01:52:54:00:85:90:e2
   2014-06-16 03:40:17  52:54:00:85:90:e2  ipv6      2001:db8:ca2:2:1::c0/64   fedora20-test   00:04:b1:d8:86:42:e1:6a:aa:cf:d5:86:94:23:6f:94:04:cd
   2014-06-16 03:34:42  52:54:00:e8:73:eb  ipv4      192.168.150.181/24        ubuntu14-vm     -
   2014-06-16 03:34:46  52:54:00:e8:73:eb  ipv6      2001:db8:ca2:2:1::5b/64   -               00:01:00:01:1b:30:c6:aa:52:54:00:e8:73:eb

tools/virsh.pod
   * Document new command

src/internal.h
   * Introduce new macro: EMPTYSTR

Query the network driver for the path of the custom leases file for the given
virtual network and parse it to retrieve info.

src/network/bridge_driver.c:
* Implement networkGetDHCPLeases
* Implement networkGetDHCPLeasesForMAC
* Implement networkGetDHCPLeasesHelper

Implement RPC calls for virNetworkGetDHCPLeases, virNetworkGetDHCPLeasesForMAC

daemon/remote.c
   * Define remoteSerializeNetworkDHCPLeases,
            remoteDispatchNetworkGetDHCPLeases
   * Define remoteDispatchNetworkGetDHCPLeasesForMAC
   * Define helper function remoteSerializeDHCPLease

src/remote/remote_driver.c
   * Define remoteNetworkGetDHCPLeases
   * Define remoteNetworkGetDHCPLeasesForMAC
   * Define helper function remoteSerializeDHCPLease

src/remote/remote_protocol.x
   * New RPC procedure: REMOTE_PROC_NETWORK_GET_DHCP_LEASES
   * Define structs remote_network_dhcp_leases, remote_network_get_dhcp_leases_args,
                    remote_network_get_dhcp_leases_ret
   * New RPC procedure: REMOTE_PROC_NETWORK_GET_DHCP_LEASES_FOR_MAC
   * Define structs remote_network_dhcp_leases_for_mac, remote_network_get_dhcp_leases_for_mac_args,
                    remote_network_get_dhcp_leases_for_mac_ret

src/remote_protocol-structs
   * New structs added

src/rpc/gendispatch.pl
   * Add exception (s/Dhcp/DHCP) for auto-generating names of the remote functions
     in daemon/remote_dispatch.h

Introduce 3 new APIs, virNetworkGetDHCPLeases, virNetworkGetDHCPLeasesForMAC
and virNetworkDHCPLeaseFree.

* virNetworkGetDHCPLeases: returns the dhcp leases information for a given
     virtual network.

  For DHCPv4, the information returned:
  - Network Interface Name
  - Expiry Time
  - MAC address
  - IAID (NULL)
  - IPv4 address (with type and prefix)
  - Hostname (can be NULL)
  - Client ID (can be NULL)

  For DHCPv6, the information returned:
  - Network Interface Name
  - Expiry Time
  - MAC address
  - IAID (can be NULL, only in rare cases)
  - IPv6 address (with type and prefix)
  - Hostname (can be NULL)
  - Client DUID

  Note: @mac, @iaid, @ipaddr, @clientid are in ASCII form, not raw bytes.
  Note: @expirytime can 0, in case the lease is for infinite time.

* virNetworkGetDHCPLeasesForMAC: returns the dhcp leases information for a
     given virtual network and specified MAC Address.

* virNetworkDHCPLeaseFree: allows the upper layer application to free the
     network interface object conveniently.

There is no support for flags, so user is expected to pass 0 for
both the APIs.

include/libvirt/libvirt.h.in:
  * Define virNetworkGetDHCPLeases
  * Define virNetworkGetDHCPLeasesForMAC
  * Define virNetworkDHCPLeaseFree

src/driver.h:
  * Define networkGetDHCPLeases
  * Define networkGetDHCPLeasesForMAC

src/libvirt.c:
  * Implement virNetworkGetDHCPLeases
  * Implement virNetworkGetDHCPLeasesForMAC
  * Implement virNetworkDHCPLeaseFree

src/libvirt_public.syms:
  * Export the new symbols

Commit 2cff94cc fixed the shadowed 'link' added by commit 975f0e2e,
but forgot the 'link' added by commit 08aa22ec.

Fix lxcDomainGetMemoryParameters and lxcDomainGetSchedulerParametersFlags:
virsh -c lxc:/// memtune DOMAIN
error: Unable to get number of memory parameters
error: unsupported flags (0x4) in function lxcDomainGetMemoryParameters

Introduced by commit 399394.
Signed-off-by: NChen Hanxiao <chenhanxiao@cn.fujitsu.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

If we are running on a system that is not capable of huge pages (e.g.
because the kernel is not configured that way) we still try to open
"/sys/kernel/mm/hugepages/" which however does not exist. We should
be tolerant to this specific use case.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

On the Linux kernel, if huge pages are allocated the size they cut off
from memory is accounted under the 'MemUsed' in the meminfo file.
However, we want the sum to be subtracted from 'MemTotal'. This patch
implements this feature. After this change, we can enable reporting
of the ordinary system pages in the capability XML:

<capabilities>

  <host>
    <uuid>01281cda-f352-cb11-a9db-e905fe22010c</uuid>
    <cpu>
      <arch>x86_64</arch>
      <model>Haswell</model>
      <vendor>Intel</vendor>
      <topology sockets='1' cores='1' threads='1'/>
      <feature/>
      <pages unit='KiB' size='4'/>
      <pages unit='KiB' size='2048'/>
      <pages unit='KiB' size='1048576'/>
    </cpu>
    <power_management/>
    <migration_features/>
    <topology>
      <cells num='4'>
        <cell id='0'>
          <memory unit='KiB'>4048248</memory>
          <pages unit='KiB' size='4'>748382</pages>
          <pages unit='KiB' size='2048'>3</pages>
          <pages unit='KiB' size='1048576'>1</pages>
          <distances/>
          <cpus num='1'>
            <cpu id='0' socket_id='0' core_id='0' siblings='0'/>
          </cpus>
        </cell>
        ...
      </cells>
    </topology>
  </host>
</capabilities>

You can see the beautiful thing about this: if you sum up all the
<pages/> you'll get <memory/>.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

s/link/linkpath/g in virStorageFileBackendGlusterReadlinkCallback as
older gcc complains.

Use virStorageFileSimplifyPathInternal to canonicalize gluster paths
via a callback and use it for the unique volume path retrieval API.

Introduce a common function that will take a callback to resolve links
that will be used to canonicalize paths on various storage systems and
add extensive tests.

To free string lists with some strings stolen from the middle we need to
walk the complete array. Introduce a new helper that takes the string
list size to free such string lists.

The libxl driver currently sets the disk backend to
LIBXL_DISK_BACKEND_TAP when <driver name='file'> is specified
in the <disk> config.  qdisk should be prefered with this
configuration, otherwise existing configuration such as the
following, which worked with the old Xen driver, will not work
with the libxl driver

  <disk type='file' device='cdrom'>
    <driver name='file'/>
    <source file='/path/to/some/iso'/>
    <target dev='hdc' bus='ide'/>
    <readonly/>
  </disk>

In addition, tap performs poorly compared to qdisk.

In the 404bac14 the @tmp variable was introduced. It's purpose is to
avoid typecasting when parsing --pagesize argument. However, if the
argument is not presented, tmp may be used uninitialized resulting in
bogus virNodeGetFreePages() API call:

virsh freepages --cellno 2
error: Failed to open file '/sys/devices/system/node/node2/hugepages/hugepages-4294967295kB/free_hugepages': No such file or directory
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

virNumaGetPages calls closedir(dir) in cleanup and dir could
be NULL if we jump there from the failed opendir() call.

While it's not harmful on Linux, FreeBSD libc crashes [1], so
make sure that dir is not NULL before calling closedir.

1: http://lists.freebsd.org/pipermail/freebsd-standards/2014-January/002704.html

When testing language bindings it is useful to be able to build
them against an uninstalled libvirt source tree. Add a dummy
set of pkg-config files to allow for this. This can be used by
setting

  export PKG_CONFIG_PATH=/path/to/libvirt/git/src
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

For some reason there have never been pkg-config files created
for the libvirt-qemu.so and libvirt-lxc.so libraries.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

The libvirt.pc file we install is ending up polluted with a
load of compiler flags that should be private to the libvirt
build. eg

Libs: -L${libdir} -lvirt -ldl -O2 -g -pipe -Wall \
      -Wp,-D_FORTIFY_SOURCE=2 -fexceptions \
      -fstack-protector-strong --param=ssp-buffer-size=4 \
      -grecord-gcc-switches  -m64 -mtune=generic

this is caused by including @libs@ in the Libs: line of the
pkgconfig.pc.in file.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

One of previous commits (e6258a33) tried to build the huge page code
only on Linux since it's Linux centric indeed. But it failed miserably
as it used 'WITH_LINUX' which is an automake conditional not a gcc
one. In the sources we need to use __linux__.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

There are no options to parse here other than the name of the device,
and all three possible device names have the same prefix
("virtio-balloon" with "-ccw", "-pci", or "-device" appended), so the
code is fairly simple. It has been implemented such that it will be
easier to add handling for other -device entries that aren't otherwise
recognized - just add another "else if (STRPREFIX(opts, ....)" clause.

qemuParseCommandLineString() previously would always add a <memballoon
model='virtio'/> to every result (the comments erroneously say that it
is adding a <memballoon model='none'/>) This has been changed to add
model='none', and 84 test case xml's updated accordingly (so that
qemuxml2argvtest won't fail).

Now that the memballoon device is properly parsed, we can safely add a
test for properly ignoring -nodefconfig and -nodefaults. Rather than
adding an entire new test case for this (and memballoon), we just
randomly pick the clock-utc test and modify it slightly to fulfill the
purpose.

ioctl returns -1, not the errno value

Only three other callers possibly call closedir on a NULL argument.
Even though these probably won't be used on FreeBSD where this crashes,
let's be nice and only call closedir on an actual directory stream.

==== Invalid write of size 4
====    at 0x52E678C: virNumaGetDistances (virnuma.c:479)
====    by 0x5396890: nodeCapsInitNUMA (nodeinfo.c:1796)
====    by 0x203C2B: virQEMUCapsInit (qemu_capabilities.c:960)
====  Address 0xe10a1e0 is 0 bytes after a block of size 0 alloc'd
====    at 0x4C2A6D0: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
====    by 0x52A10D6: virAllocN (viralloc.c:191)
====    by 0x52E674D: virNumaGetDistances (virnuma.c:470)
====    by 0x5396890: nodeCapsInitNUMA (nodeinfo.c:1796)
====    by 0x203C2B: virQEMUCapsInit (qemu_capabilities.c:960)

The hugepage sizing and counting code gathers the information from sysfs
and thus isn't portable. Stub it out for non-Linux so that we can report
a better error. This patch also avoids calling sysinfo() on Mingw where
it isn't supported.

Don't return possibly incomplete result if virDirRead fails.

makefile_conditionals
tests/Makefile.am:293:endif
maint.mk: match "if FOO" with "endif FOO" in Makefiles
make: *** [sc_makefile_conditionals] Error 1

'virstoragetest' accesses backing chains of files on local storage with
the help of the storage driver. Disable the test on builds without the
storage driver as the test is crashing otherwise.

Reported by: Roman Bogorodskiy