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Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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Laine Stump 84dc367e2a lxc: don't try to reserve macvtap name for LXC domains 
Commit 729a06c41 added code to the LXC driver (patterned after similar
code in the QEMU driver) that called
virNetDevMacVlanReserveName(net->ifname) for all type='direct'
interfaces during a libvirtd restart, to prevent other domains from
attempting to use a macvtap device name that was already in use by a
domain.

But, unlike a QEMU domain, when an LXC domain creates a macvtap
device, that device is almost immediately moved into the namespace of
the container (and it's then renamed, but that part isn't
important). Because of this, the LXC driver doesn't keep track (in
net->ifname) of the name used to create the device (as the QEMU driver
does).

The result of this is that if libvirtd is restarted while there is an
active LXC domain that has <interface type='direct'>, libvirtd will
segfault (since virNetDevMacVLanReserveName() doesn't check for a NULL
pointer).

The fix is to just not call that function in the case of the LXC
driver, since it is pointless anyway.

Fixes: 729a06c41a
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-12-15 09:27:55 -05:00
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.github github: skip lockdown of old issues/prs 2020-04-07 17:50:54 +01:00
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build-aux syntax-check: Don't forbid curly braces around single line condition body 2020-09-15 15:20:23 +02:00
ci ci: containers: Refresh the Dockerfiles 2020-12-15 09:52:14 +00:00
docs node_device: detecting mdev_types capability on ap_matrix device 2020-12-09 14:03:05 +01:00
examples libvirt: support memory failure event 2020-10-23 09:41:52 +02:00
include virsh: nodedev: filter by AP Matrix capability 2020-12-09 14:03:05 +01:00
po Translated using Weblate (German) 2020-12-14 12:18:17 +01:00
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src lxc: don't try to reserve macvtap name for LXC domains 2020-12-15 09:27:55 -05:00
tests qemu: Relax validation for mem->access if guest has no NUMA 2020-12-14 14:00:25 +01:00
tools virsh: virshAddressParse: check for malformed address 2020-12-10 12:58:54 +01:00
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.gitlab-ci.yml gitlab: replace "libvirt-" prefix with "ci-" in dockerfiles 2020-12-08 16:04:03 +00:00
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config.h Fix capitalization "CLang" -> "Clang" 2020-11-12 15:01:42 +01:00
configmake.h.in meson: generate configmake.h 2020-08-03 09:26:48 +02:00
CONTRIBUTING.rst meson: adjust our documentation to mention meson instead of autoconf 2020-08-03 09:27:09 +02:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
gitdm.config gitdm: add 'ibm' file 2019-10-18 17:32:52 +02:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
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libvirt.spec.in spec: don't touch existing nwfilters on update 2020-12-11 09:18:28 +03:00
meson_options.txt meson: add tests build option to enable/disable unit tests 2020-10-09 13:44:54 +02:00
meson.build meson: add winsock2 library on windows builds 2020-12-02 12:49:05 +00:00
mingw-libvirt.spec.in rpm: convert mingw spec to meson 2020-12-07 12:24:32 +00:00
NEWS.rst NEWS: mention node device driver support for AP devices 2020-12-09 14:03:05 +01:00
README.rst README: drop Travis CI badge 2020-08-03 15:08:28 +02:00
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README.rst

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Libvirt API for virtualization

Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.

For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.

Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.

Further information about the libvirt project can be found on the website:

https://libvirt.org

License

The libvirt C API is distributed under the terms of GNU Lesser General Public License, version 2.1 (or later). Some parts of the code that are not part of the C library may have the more restrictive GNU General Public License, version 2.0 (or later). See the files COPYING.LESSER and COPYING for full license terms & conditions.

Installation

Instructions on building and installing libvirt can be found on the website:

https://libvirt.org/compiling.html

Contributing

The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:

https://libvirt.org/contribute.html

Contact

The libvirt project has two primary mailing lists:

Further details on contacting the project are available on the website:

https://libvirt.org/contact.html