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When opening a connection, it may be necessary to provide user credentials, or some additional info (e.g. whether to trust an ssh key). We have a special API for that: virConnectOpenAuth() where and additional callback can be passed. This callback is then called with _virConnectCredential struct filled partially and it's callback's responsibility to get desired data (e.g. by prompting user) and store it into .result member of the struct. But we document the callback behaviour as: When authentication requires one or more interactions, this callback is invoked. For each interaction supplied, data must be gathered from the user and filled in to the 'result' and 'resultlen' fields. If an interaction cannot be filled, fill in NULL and 0. Returns 0 if all interactions were filled, or -1 upon error But there are some buggy callbacks out there, which set: .result = NULL; .resultlen = 0; and return 0. Report an error when such buggy callback is met. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2181235 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Martin Kletzander <mkletzan@redhat.com> |
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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:
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:
- 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: