Daniel P. Berrangé d2e5aa4f4e util: introduce object for holding a system inhibitor lock
The system inhibitor locks are currently handled by code in the
virNetDaemon class. The driver code invokes a callback provided
by the daemon when it wants to start or end inhibition.

When the first inhibition is started, the daemon will call out
to logind to apply it system wide.

This has many flaws

 * A single message is registered with logind regardless of
   what driver holds the inhibition
 * An inhibition of daemon shutdown can't be acquired
   without also inhibiting system shutdown
 * Config of the inhibitions cannot be tailored by the
   driver

The new virInhibitor object addresses these:

 * The object directly manages an inhibition with logind
   privately to the driver, enabling custom messages to
   be set.
 * It is possible to acquire an inhibition locally to the
   daemon without forwarding it to logind.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2024-12-19 18:03:04 +00:00
2019-05-31 17:54:28 +02:00
2024-11-12 11:00:26 +01:00
2019-09-06 12:47:46 +02:00
2022-03-17 14:33:12 +01:00
2023-12-05 11:48:28 +01:00
2020-08-03 09:26:48 +02:00
2019-10-18 17:32:52 +02:00
2015-06-16 13:46:20 +02:00
2024-09-24 08:24:00 +02:00
2024-12-02 13:20:38 +01:00

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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

Description
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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