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This patch adds a new public api that lists domains. The new approach is different from those used before. There are key points to this: 1) The list is acquired atomically and contains both active and inactive domains (guests). This eliminates the need to call two different list APIs, where the state might change in between the calls. 2) The returned list consists of virDomainPtrs instead of names or ID's that have to be converted to virDomainPtrs anyways using separate calls for each one of them. This is more convenient and saves hypervisor calls. 3) The returned list is auto-allocated. This saves a lot of hassle for the users. 4) Built in support for filtering. The API call supports various filtering flags that modify the output list according to user needs. Available filter groups: Domain status: VIR_CONNECT_LIST_DOMAINS_ACTIVE, VIR_CONNECT_LIST_DOMAINS_INACTIVE Domain persistence: VIR_CONNECT_LIST_DOMAINS_PERSISTENT, VIR_CONNECT_LIST_DOMAINS_TRANSIENT Domain state: VIR_CONNECT_LIST_DOMAINS_RUNNING, VIR_CONNECT_LIST_DOMAINS_PAUSED, VIR_CONNECT_LIST_DOMAINS_SHUTOFF, VIR_CONNECT_LIST_DOMAINS_OTHER Existence of managed save image: VIR_CONNECT_LIST_DOMAINS_MANAGEDSAVE, VIR_CONNECT_LIST_DOMAINS_NO_MANAGEDSAVE Auto-start option: VIR_CONNECT_LIST_DOMAINS_AUTOSTART, VIR_CONNECT_LIST_DOMAINS_NO_AUTOSTART Existence of snapshot: VIR_CONNECT_LIST_DOMAINS_HAS_SNAPSHOT, VIR_CONNECT_LIST_DOMAINS_NO_SNAPSHOT 5) The python binding returns a list of domain objects that is very neat to work with. The only problem with this approach is no support from code generators so both RPC code and python bindings had to be written manually. *include/libvirt/libvirt.h.in: - add API prototype - clean up whitespace mistakes nearby *python/generator.py: - inhibit generation of the bindings for the new api *src/driver.h: - add driver prototype - clean up some whitespace mistakes nearby *src/libvirt.c: - add public implementation *src/libvirt_public.syms: - export the new symbol
LibVirt : simple API for virtualization Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the GNU Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurrently on a single hardware system where the basic resources are driven by a Linux instance. The library aim at providing long term stable C API initially for the Xen paravirtualization but should be able to integrate other virtualization mechanisms if needed. Daniel Veillard <veillard@redhat.com>
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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