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mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-03-07 17:28:15 +00:00
Erik Skultety a2d3dea9d4 qemu: caps: Use CAP_DAC_OVERRIDE for probing to avoid permission issues
This is mainly about /dev/sev and its default permissions 0600. Of
course, rule of 'tinfoil' would be that we can't trust anything, but the
probing code in QEMU is considered safe from security's perspective + we
can't create an udev rule for this at the moment, because ioctls and
file system permissions aren't cross-checked in kernel and therefore a
user with read permissions could issue a 'privileged' operation on SEV
which is currently only limited to root.

https://bugzilla.redhat.com/show_bug.cgi?id=1665400

Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-02-01 12:44:28 +01:00
2019-01-07 21:56:16 -06:00
2018-12-17 17:52:46 +01:00
2019-01-14 18:10:21 +00:00
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2015-06-16 13:46:20 +02:00
2018-07-27 15:44:38 +02:00
2017-05-22 17:01:37 +01:00
2017-10-13 16:08:01 +01:00
2018-07-24 12:10:21 -04:00

Build Status CII Best Practices

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 2.1 (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:

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.
Readme 731 MiB
Languages
C 95.1%
Python 2%
Meson 0.9%
Shell 0.6%
Perl 0.5%
Other 0.8%