8511b96a31
There are a few situations where passt itself is unable to create a file because it runs under QEMU user (e.g. just like our example from formatdomain.rst suggests: /var/log/passt.log). If libvirtd runs with sufficient permissions (e.g. as root) it can create the file and set seclabels on it so that passt can then open it. Ideally, we would just pass pre-opened FD, but this wasn't viewed as secure enough [1]. So lets just create the file and set seclabels. For the case when both libvirtd and passt have the same permissions, well then we fail before even needing to fork() and exec(). 1: https://archives.passt.top/passt-dev/20230606225836.63aecebe@elisabeth/ Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2209191 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@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 2.0 (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: