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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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Eric Blake 4a86c2bb4b python: improve conversion validation 
Laszlo Ersek pointed out that in trying to convert a long to an
unsigned int, we used:

long long_val = ...;
if ((unsigned int)long_val == long_val)

According to C99 integer promotion rules, the if statement is
equivalent to:

(unsigned long)(unsigned int)long_val == (unsigned long)long_val

since you get an unsigned comparison if at least one side is
unsigned, using the largest rank of the two sides; but on 32-bit
platforms, where unsigned long and unsigned int are the same size,
this comparison is always true and ends up converting negative
long_val into posigive unsigned int values, rather than rejecting
the negative value as we had originally intended (python longs
are unbounded size, and we don't want to do silent modulo
arithmetic when converting to C code).

Fix this by using direct comparisons, rather than casting.

* python/typewrappers.c (libvirt_intUnwrap, libvirt_uintUnwrap)
(libvirt_ulongUnwrap, libvirt_ulonglongUnwrap): Fix conversion
checks.
2012-03-31 09:16:00 -06:00
.gnulib@d5612c714c build: prohibit cross-inclusion 2012-03-02 06:22:43 -07:00
daemon Consistent style for usage of sizeof operator 2012-03-30 11:47:24 +01:00
docs Refactor the libvirt RPM daemon pieces 2012-03-31 12:20:38 +01:00
examples Fix client only RPM build & other misc RPM problems 2012-03-31 13:22:40 +01:00
gnulib build: fix mingw ssize_t, syntax check 2012-03-30 11:10:54 -06:00
include snapshot: add atomic create flag 2012-03-23 16:38:20 -06:00
m4 Enable all warnings permanently & default to -Werror for GIT builds 2012-03-27 17:08:06 +01:00
po Add helper API for finding auth file path 2012-03-23 13:24:07 +00:00
python python: improve conversion validation 2012-03-31 09:16:00 -06:00
src qemu: support live change of the bridge used by a guest network device 2012-03-30 20:14:36 -04:00
tests Consistent style for usage of sizeof operator 2012-03-30 11:47:24 +01:00
tools Consistent style for usage of sizeof operator 2012-03-30 11:47:24 +01:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore build: drop obsolete qparams test 2012-03-23 16:12:58 -06:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: prune duplicate listings in AUTHORS 2012-02-03 09:56:45 -07:00
AUTHORS qemu: Make migration fail when port profile association fails on the dst host 2012-03-28 10:45:22 -06:00
autobuild.sh Enable all warnings permanently & default to -Werror for GIT builds 2012-03-27 17:08:06 +01:00
autogen.sh build: allow for local gnulib diffs 2011-11-09 09:03:33 -07:00
bootstrap build: update to latest gnulib 2012-02-29 10:27:40 -07:00
bootstrap.conf build: drop a painfully long gnulib test 2012-03-21 11:12:30 -06:00
cfg.mk build: fix mingw ssize_t, syntax check 2012-03-30 11:10:54 -06:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac Enable all warnings permanently & default to -Werror for GIT builds 2012-03-27 17:08:06 +01:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Document STREQ_NULLABLE and STRNEQ_NULLABLE 2011-10-06 16:50:38 +02:00
libvirt.pc.in Fix typos in API XML file paths 2012-02-15 11:29:38 +00:00
libvirt.spec.in Fix client only RPM build & other misc RPM problems 2012-03-31 13:22:40 +01:00
Makefile.am maint: add missing copyright notices 2011-07-28 15:01:17 -06:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw32-libvirt.spec.in Fix typos in API XML file paths 2012-02-15 11:29:38 +00:00
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
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>