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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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Michal Privoznik 752596b5dd qemuDomainChangeGraphics: Check listen address change by listen type 
Currently, we have a bug when updating a graphics device. A graphics device can
have a listen address set. This address is either defined by user (in which case
it's type is VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_ADDRESS) or it can be inherited
from a network (in which case it's type is
VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_NETWORK). However, in both cases we have a
listen address to process (e.g. during migration, as I've tried to fix in
7f15ebc7).
Later, when a user tries to update the graphics device (e.g. set a password),
we check if listen addresses match the original as qemu doesn't know how to
change listen address yet. Hence, users are required to not change the listen
address. The implementation then just dumps listen addresses and compare them.
Previously, while dumping the listen addresses, NULL was returned for NETWORK.
After my patch, this is no longer true, and we get a listen address for olddev
even if it is a type of NETWORK. So we have a real string on one side, the NULL
from user's XML on the other side and hence we think user wants to change the
listen address and we refuse it.

Therefore, we must take the type of listen address into account as well.
2013-06-20 19:41:53 +02:00
.gnulib@a363f4ed4a build: update to latest gnulib, for syntax-check 2013-05-10 20:52:57 -06:00
build-aux syntax-check: mandate space after mid-line semicolon 2013-05-28 08:26:05 -06:00
daemon Prefer VIR_STRDUP over virAsprintf(&dst, "%s", str) 2013-06-07 17:45:53 +02:00
docs schema: simplify RNG pattern, remove superfluous <optional> 2013-06-12 16:14:44 +02:00
examples syntax: prefer space after semicolon in for loop 2013-05-28 07:56:07 -06:00
gnulib maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
include migration: Make erroring out on I/O error controllable by flag 2013-06-18 14:52:26 +02:00
m4 FreeBSD: disable buggy -fstack-protector-all 2013-05-15 15:20:52 -06:00
po Release of libvirt 1.0.6 2013-06-03 12:09:56 +02:00
python syntax: prefer space after semicolon in for loop 2013-05-28 07:56:07 -06:00
src qemuDomainChangeGraphics: Check listen address change by listen type 2013-06-20 19:41:53 +02:00
tests util: switch virBufferTrim to void 2013-06-19 09:21:09 +02:00
tools util: switch virBufferTrim to void 2013-06-19 09:21:09 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap Autogenerate AUTHORS 2012-10-19 12:44:56 -04:00
AUTHORS.in Add John Ferlan to the committers list 2013-02-05 10:59:32 -05:00
autobuild.sh Set PKG_CONFIG_LIBDIR in autobuild.sh 2013-05-17 17:09:29 +01:00
autogen.sh build: fix incremental autogen.sh when no AUTHORS is present 2012-12-03 14:59:09 -07:00
bootstrap maint: update to latest gnulib 2013-05-08 14:54:04 -06:00
bootstrap.conf Include GNULIB mkdtemp module 2013-05-17 17:09:29 +01:00
cfg.mk maint: don't use config.h in .h files 2013-06-05 05:53:25 -06:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac configure: Remove unused brctl check 2013-06-12 11:50:06 -04:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
HACKING syntax-check: mandate space after mid-line semicolon 2013-05-28 08:26:05 -06:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in spec: Enable KVM support on ARM 2013-06-18 07:33:23 -04:00
Makefile.am maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
Makefile.nonreentrant maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
mingw-libvirt.spec.in test: Return Libvirt logo as domain screenshot 2013-04-02 14:38:56 +02:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking maint: relax git minimum version 2010-02-24 14:29:27 -05:00
run.in run: license as LGPL 2013-02-23 14:03:19 -07:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

README 

         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>