Daniel P. Berrangé c723a98618 qemu: split handling of distinct firmware enum conversions
The qemuFirmwareOSInterfaceTypeFromOsDefFirmware method
was added to convert from virDomainOsDefFirmware to the
qemuFirmwareOSInterface enum.

It was later also used to convert from virDomainLoader
to qemuFirmwareOSInterface in:

  commit 8e1804f9f66f13ca1412d22bf1a957b6d55a2365
  Author: Michal Prívozník <mprivozn@redhat.com>
  Date:   Tue Dec 17 17:45:50 2019 +0100

    qemu_firmware: Try to autofill for old style UEFI specification

This caused compile errors with clang due to passing a
mis-matched enum type. These were later silenced by
stripping the enum types:

  commit 8fcee47807d29008632a7ad918cbe93ac0a20597
  Author: Michal Prívozník <mprivozn@redhat.com>
  Date:   Wed Jan 8 09:42:47 2020 +0100

    qemu_firmware: Accept int in qemuFirmwareOSInterfaceTypeFromOsDefFirmware()

This is still rather confusing to humans reading the
code. It is clearer to just define a separate helper
method for the virDomainLoader type conversion.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2022-01-14 18:56:39 +00:00
..
2021-12-03 17:18:26 +01:00
2021-12-01 13:53:12 +01:00
2021-12-03 17:18:26 +01:00
2022-01-05 14:08:40 +01:00

       libvirt library code README
       ===========================

The directory provides the bulk of the libvirt codebase. Everything
except for the libvirtd daemon and client tools. The build uses a
large number of libtool convenience libraries - one for each child
directory, and then links them together for the final libvirt.so,
although some bits get linked directly to libvirtd daemon instead.

The files directly in this directory are supporting the public API
entry points & data structures.

There are two core shared modules to be aware of:

 * util/  - a collection of shared APIs that can be used by any
            code. This directory is always in the include path
            for all things built

 * conf/  - APIs for parsing / manipulating all the official XML
            files used by the public API. This directory is only
            in the include path for driver implementation modules

 * vmx/   - VMware VMX config handling (used by esx/ and vmware/)


Then there are the hypervisor implementations:

 * bhyve         - bhyve - The BSD Hypervisor
 * esx/          - VMware ESX and GSX support using vSphere API over SOAP
 * hyperv/       - Microsoft Hyper-V support using WinRM
 * lxc/          - Linux Native Containers
 * openvz/       - OpenVZ containers using cli tools
 * qemu/         - QEMU / KVM using qemu CLI/monitor
 * remote/       - Generic libvirt native RPC client
 * test/         - A "mock" driver for testing
 * vbox/         - Virtual Box using native API
 * vmware/       - VMware Workstation and Player using the vmrun tool
 * xen/          - Xen using hypercalls, XenD SEXPR & XenStore


Finally some secondary drivers that are shared for several HVs.
Currently these are used by LXC, OpenVZ, QEMU and Xen drivers.
The ESX, Hyper-V, Remote, Test & VirtualBox drivers all
implement the secondary drivers directly

 * cpu/          - CPU feature management
 * interface/    - Host network interface management
 * network/      - Virtual NAT networking
 * nwfilter/     - Network traffic filtering rules
 * node_device/  - Host device enumeration
 * secret/       - Secret management
 * security/     - Mandatory access control drivers
 * storage/      - Storage management drivers


Since both the hypervisor and secondary drivers can be built as
dlopen()able modules, it is *FORBIDDEN* to have build dependencies
between these directories. Drivers are only allowed to depend on
the public API, and the internal APIs in the util/ and conf/
directories