48a2668151
Back in the bad old days different device types required a different qemu monitor call to detach them, and so an <interface type='hostdev'> needed to call the function for detaching hostdevs, while other <interface> types could be deleted as netdevs. Times have changed, and *all* device types are detached by calling the common function qemuDomainDeleteDevice(vm, alias), so we don't need to differentiate between hostdev interfaces and the others for that reason. There are a few other netdev-specific functions called during qemuDomainDetachNetDevice() (clearing bandwidth limits, stopping the interface), but those turn into NOPs when type=hostdev, so they're safe to call for type=hostdev. The only thing that is different + not a NOP is the call to virDomainAudit*() when qemuDomainDeleteDevice() fails, so if we add a conditional for that small bit of code, we can eliminate the callout from qemuDomainDetachNetDevice() to qemuDomainDetachThisDevice(), which makes this function fit the desired pattern for merging with the other detach functions, and paves the way to simplifying qemuDomainDetachHostDevice() too. Signed-off-by: Laine Stump <laine@laine.org> ACKed-by: Peter Krempa <pkrempa@redhat.com>
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:
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 2.1 (or later). See the files COPYING.LESSER
and COPYING for full license terms & conditions.
Installation
Libvirt uses the GNU Autotools build system, so in general can be built and installed with the usual commands. For example, to build in a manner that is suitable for installing as root, use:
$ ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ make
$ sudo make install
While to build & install as an unprivileged user
$ ./configure --prefix=$HOME/usr
$ make
$ make install
The libvirt code relies on a large number of 3rd party libraries. These will
be detected during execution of the configure script and a summary printed
which lists any missing (optional) dependencies.
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:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: