If PCI passthrough type is not supported, we should error out rather than
continue building the command line.

When starting a domain, the type has been already checked by
qemuPrepareHostdevPCICheckSupport() before building qemu command line,
so the problem doesn't emerge.

But when coverting a domain xml without specifying passthrough type explictly
to qemu arg, we will get a malformed command line.

the xml:

    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0001' bus='0x03' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </hostdev>

the converted command line:

  -device ,host=0001:03:00.0,id=hostdev0,bus=pci.0,addr=0x5

After this patch, virsh gives an error message:

  virsh domxml-to-native qemu-argv /tmp/tmp.xml
  error: internal error: invalid PCI passthrough type 'default'
Signed-off-by: NHu Tao <hutao@cn.fujitsu.com>

Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

  <memoryBacking>
    <hugepages>
      <page size="1" unit="G" nodeset="0-3,5"/>
      <page size="2" unit="M" nodeset="4"/>
    </hugepages>
  </memoryBacking>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This internal API just checks if two bitmaps intersect or not.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Use better detection of hugetlbfs mount points. Yes, there can be
multiple mount points each serving different huge page size.

Since we already have ability to override the mount point in the
qemu.conf file, this crazy backward compatibility code is brought in.
Now we allow multiple mount points, so the "hugetlbfs_mount" option
must take an list of strings (mount points). But previously, it was
just a string, so we must accept both types now.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This should iterate over mount tab and search for hugetlbfs among with
looking for the default value of huge pages.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Use correct mode when pre-creating files (for snapshots). The refactor
changing to storage driver usage caused a regression as some systems
created the file with 000 permissions forbidding qemu to write the file.

Pass mode to the creating functions to avoid the problem.

Regression since 185e07a5.

* docs/schemas/domaincommon.rng: Add bhyve domain type, nmdm
  serial type and master and slave optional attributes for
  serial that are used by nmdm
* tests/domainschematest: Add bhyvexml2argvdata directory
  to validate bhyve XMLs

Fix a -Werror=maybe-uninitialized warning
Signed-off-by: NChen Hanxiao <chenhanxiao@cn.fujitsu.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

Leak introduced in commit 16ebf10f (v1.2.6), detected by valgrind:

==9816== 216 (96 direct, 120 indirect) bytes in 6 blocks are definitely lost in loss record 665 of 821
==9816==    at 0x4A081D4: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==9816==    by 0x50836FB: virAlloc (viralloc.c:144)
==9816==    by 0x1DBDBE27: udevProcessPCI (node_device_udev.c:546)
==9816==    by 0x1DBDD79D: udevGetDeviceDetails (node_device_udev.c:1293)

* src/util/virpci.h (virPCIEDeviceInfoFree): New prototype.
* src/util/virpci.c (virPCIEDeviceInfoFree): New function.
* src/conf/node_device_conf.c (virNodeDevCapsDefFree): Clear
pci_express under pci case.
(virNodeDevCapPCIDevParseXML): Avoid leak.
* src/node_device/node_device_udev.c (udevProcessPCI): Likewise.
* src/libvirt_private.syms (virpci.h): Export it.
Signed-off-by: NEric Blake <eblake@redhat.com>

Finding virPCIE* code is more intuitive if located in virpci.h
instead of node_device_conf.h.

* src/conf/node_device_conf.h (virPCIELinkSpeed, virPCIELink)
(virPCIEDeviceInfo): Move...
* src/util/virpci.h: ...here.
* src/conf/node_device_conf.c (virPCIELinkSpeed): Likewise.
Signed-off-by: NEric Blake <eblake@redhat.com>

The compiler can alert us to places where we need to expand switch
statements because we add a new enum value, but only if we don't
have a default case.

* src/conf/node_device_conf.c (virNodeDeviceDefFormat)
(virNodeDevCapsDefParseXML, virNodeDevCapsDefFree): Drop default
case.
Signed-off-by: NEric Blake <eblake@redhat.com>

Commit e5f36698 introduces a
false-positive build failure in the sound card model handling switch.
Initialize the model to NULL although the value should never be used.

Use correct type in the switch and handle all sound card models in it so
that the compiler tracks additions.

Libvirt documents that the default entropy source for the 'random'
backend of a RNG device is /dev/random. Instead of storing and
propagating NULL across our code and checking it in multiple places fill
the default in the post parse callback and use that in the other places.

Covers the whole ppc64 family. Example bug for binutils:

https://bugzilla.redhat.com/show_bug.cgi?id=834651

Since 24e5cafb (thankfully unreleased)
when a VM with an empty disk drive would be started the code would call
stat() on NULL path as a check was missing from the callback rendering
machines unstartable.

Report success when the path is empty (denoting an empty drive).

Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

virTimeFieldsThenRaw will never return negative result, so I clean up
the related meaningless judgements to make it better.
Signed-off-by: NJames <james.wangyufei@huawei.com>
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Signed-off-by: NLi Yang <liyang.fnst@cn.fujitsu.com>

qemu supports adding multiple RNG devices. This patch allows libvirt to
support this.

The "random" backend for virtio-rng can be started with no path
specified which equals to /dev/random. The cgroup code didn't consider
this and called few of the functions with NULL resulting into:

 $ virsh start rng-vm
 error: Failed to start domain rng-vm
 error: Path '(null)' is not accessible: Bad address

Problem introduced by commit c6320d34

If user hasn't provided any @emulatorbin, the qemuCaps are
searched by @arch provided (which in fact can be guessed from the
host). However, there's no guarantee that the qemu binary for
@arch will exist.  Therefore qemu capabilities may be nonexistent
too. If that's the case, we should throw an error message prior
jumping onto 'cleanup' label as the helper lookup function
remains silent on no search result.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This was changed before:

https://www.redhat.com/archives/libvir-list/2013-October/msg00525.html

but not everywhere in the code.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1100769Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Add support for CDROM devices for bhyve driver using
bhyve(8)'s 'ahci-cd' device type.

As bhyve currently does not support media insertion at runtime,
disallow to start a domain with an empty source path for cdrom
devices.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=997802Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Create the structures and API's to hold and manage the iSCSI host device.
This extends the 'scsi_host' definitions added in commit id '5c811dce'.
A future patch will add the XML parsing, but that code requires some
infrastructure to be in place first in order to handle the differences
between a 'scsi_host' and an 'iSCSI host' device.

Add a conn for future patches to be able to grab the secret when
authenticating an iSCSI host device

Split virDomainHostdevSubsysSCSI further. In preparation for having
either SCSI or iSCSI data, create a union in virDomainHostdevSubsysSCSI
to contain just a virDomainHostdevSubsysSCSIHost to describe the
'scsi_host' host device

Create a separate typedef for the hostdev union data describing SCSI
Then adjust the code to use the new pointer

Create a separate typedef for the hostdev union data describing PCI.
Then adjust the code to use the new pointer

Create a separate typedef for the hostdev union data describing USB.
Then adjust the code to use the new pointer

Move the last operation done on local files to the storage driver API.

Add backends for this frontend function so that we can use it in the
snapshot creation code.

Use the storage driver to chown remote images.

Use the callback to set disk and storage image labels by modifying the
existing functions and adding wrappers to avoid refactoring a lot of the
code.

To integrate the security driver with the storage driver we need to
pass a callback for a function that will chown storage volumes.

Introduce and document the callback prototype.