c502955909
virDomainSnapshotDefFormat currently takes two sets of knobs: an 'unsigned int flags' argument that can currently just be VIR_DOMAIN_DEF_FORMAT_SECURE, and an 'int internal' argument used as a bool to determine whether to output an additional element. It then reuses the 'flags' knob to call into virDomainDefFormatInternal(), which takes a different set of flags. In fact, prior to commit 0ecd6851 (1.2.12), the 'flags' argument actually took the public VIR_DOMAIN_XML_SECURE, which was even more confusing. Let's borrow from the style of that earlier commit, by introducing a function for translating from the public flags (VIR_DOMAIN_SNAPSHOT_XML_SECURE was just recently introduced) into a new enum specific to snapshot formatting, and adjust all callers to use snapshot-specific enum values when formatting, and where the formatter now uses a new variable 'domainflags' to make it obvious when we are translating from snapshot flags back to domain flags. We don't even have to use the conversion function for drivers that don't accept the public VIR_DOMAIN_SNAPSHOT_XML_SECURE flag. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: John Ferlan <jferlan@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: