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.
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Jiri Denemark 36e125296a util: Fix virDaemonForkIntoBackground
This commit partially reverts

    commit c360ea28dc
    Refs: v6.2.0-rc1-1-gc360ea28dc
    Author:     Rafael Fonseca <r4f4rfs@gmail.com>
    AuthorDate: Fri Mar 27 18:40:47 2020 +0100
    Commit:     Michal Prívozník <mprivozn@redhat.com>
    CommitDate: Mon Mar 30 09:48:22 2020 +0200

    util: virdaemon: fix compilation on mingw

    The daemons are not supported on Win32 and therefore were not compiled
    in that platform. However, with the daemon code sharing, all the code in
    utils *is* compiled and it failed because `waitpid`, `fork`, and
    `setsid` are not available. So, as before, let's not build them on
    Win32 and make the code more portable by using existing vir* wrappers.

Not compiling virDaemonForkIntoBackground on Win32 is good, but the
second part of the original patch incorrectly replaced waitpid and fork
with our virProcessWait and virFork APIs. These APIs are more than just
simple wrappers and we don't want any of the extra functionality.
Especially virFork would reset any setup made before
virDaemonForkIntoBackground is called, such as logging, signal handling,
etc.

As a result of the change the additional fix in v6.2.0-67-ga87e4788d2
(util: virdaemon: fix waiting for child processes) is no longer
needed and it is effectively reverted by this commit.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-04-17 15:53:57 +02:00
.ctags.d maint: Add support for .ctags.d 2019-05-31 17:54:28 +02:00
.github github: skip lockdown of old issues/prs 2020-04-07 17:50:54 +01:00
build-aux docs: Add advanced-tests.rst 2020-04-08 09:32:39 +02:00
ci ci: Drop handling of $PKG_CONFIG_LIBDIR 2020-03-04 11:24:10 +01:00
docs docs: Improve zPCI section in pci-addresses.rst 2020-04-17 15:06:04 +02:00
examples qemu: support Panic Crashloaded event handling 2020-02-07 14:05:25 +00:00
include/libvirt admin: Introduce virAdmServerUpdateTlsFiles 2020-03-13 17:07:32 +00:00
m4 qemu-conf: add configurable dbus-daemon location 2020-03-24 15:57:33 +01:00
po Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
scripts scripts: avoid error in DCO check on empty branches 2020-03-27 15:12:48 +00:00
src util: Fix virDaemonForkIntoBackground 2020-04-17 15:53:57 +02:00
tests backup: Allow 'encryption' of backups and scratch images 2020-04-14 18:49:41 +02:00
tools virsh: cmdUndefine: Properly extract delete-storage-volume-snapshots flag 2020-04-14 18:43:48 +02:00
.color_coded.in gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.ctags ctags: Generate tags for headers, i.e. function prototypes 2018-09-18 14:21:33 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.editorconfig Add .editorconfig 2019-09-06 12:47:46 +02:00
.gitignore gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.gitlab-ci.yml gitlab: Enable improved ccache usage 2020-04-15 17:50:49 +02:00
.gitmodules gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.gitpublish gitpublish: add a subject prefix 2020-01-16 13:04:11 +00:00
.mailmap mailmap: Remove some duplicates 2019-06-07 13:18:08 +02:00
.travis.yml travis: Remove usage of 'sudo' 2020-04-14 15:21:22 +02:00
.ycm_extra_conf.py.in gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
ABOUT-NLS Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
AUTHORS.in AUTHORS: Add Fabiano Fidêncio 2019-12-19 16:42:06 +01:00
autogen.sh build: stop running aclocal manually 2020-02-25 09:22:56 +00:00
ChangeLog maint: Stop generating ChangeLog from git 2019-04-03 09:45:25 +02:00
config-post.h gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
configure.ac maint: Post-release version bump to 6.3.0 2020-04-03 09:25:00 +02:00
CONTRIBUTING.rst CONTRIBUTING: Add entry point for new contributors 2020-04-14 13:16:13 +02:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
gitdm.config gitdm: add 'ibm' file 2019-10-18 17:32:52 +02:00
GNUmakefile build: merge all syntax-check logic into one file 2019-10-09 13:36:54 +01:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
Makefile.am Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
Makefile.nonreentrant Remove backslash alignment attempts 2017-11-03 13:24:12 +01:00
mingw-libvirt.spec.in Remove phyp driver 2019-12-20 12:25:42 -05:00
README Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
README.rst Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
run.in run.in: Include tools directory on $PATH. 2020-01-21 13:04:57 +01:00

.. image:: https://travis-ci.org/libvirt/libvirt.svg
     :target: https://travis-ci.org/libvirt/libvirt
     :alt: Travis CI Build Status
.. image:: https://bestpractices.coreinfrastructure.org/projects/355/badge
     :target: https://bestpractices.coreinfrastructure.org/projects/355
     :alt: 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 2.0 (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, however, we mandate to have the
build directory different than the source directory. For example, to build
in a manner that is suitable for installing as root, use:

::

  $ mkdir build && cd build
  $ ../configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
  $ make
  $ sudo make install

While to build & install as an unprivileged user

::

  $ mkdir build && cd build
  $ ../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:

https://libvirt.org/contact.html