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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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848a3b1d5b
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Eric Blake 848a3b1d5b tests: avoid segfault if json monitor not present 
On a machine without yajl headers, I was seeing random segfaults
from qemumonitorjsontest (about 90% of the runs on my particular
machine).  The segfault was inside virClassIsDerivedFrom, which
points to a case of a race leading to unreferencing a stale
pointer to an object that had already been freed.  I also noticed
that if I got the segfault, I was seeing messages such as:

2013-02-22 16:12:37.504+0000: 19833: error : virNetSocketWriteWire:1361 : Cannot write data: Bad file descriptor

which is also evidence of deferencing a stale pointer.  I traced it
to a race where qemuMonitorTestIO could execute late, after the
main thread had already called qemuMonitorTestFree and called
virNetSocketClose(test->client) but not clearing it out to NULL.
Sure enough, after test->client has been closed, fd is -1, which
causes an attempt to write to the socket to fail, which in turn
triggers the error code of qemuMonitorTestIO that tries to re-close
test->client.

* tests/qemumonitortestutils.c (qemuMonitorTestIO): Don't attempt
to free client again if test already quit.
2013-02-25 17:37:14 -07:00
.gnulib@819b1c38b9 maint: update to latest gnulib 2013-02-01 09:24:00 -07:00
build-aux Document bracket whitespace rules & add syntax-check rule 2012-11-02 14:00:32 +00:00
daemon remote: Implement virDomainGetJobStats 2013-02-22 17:35:58 +01:00
docs doc: schema: Add basic documentation for the virtual RNG device support 2013-02-25 10:17:35 +01:00
examples Remove more trailing semicolons in Python files 2013-02-07 19:52:44 +01:00
gnulib maint: update to latest gnulib 2013-01-02 09:38:30 -07:00
include Introduce virDomainMigrate*CompressionCache APIs 2013-02-22 17:35:59 +01:00
m4 Fix typo in configure.ac causing $LIBS to gain a copy of $CFLAGS 2013-02-05 18:04:16 +00:00
po Release of libvirt-1.0.2 2013-01-30 10:42:05 +01:00
python python: Implement virDomainMigrateGetCompressionCache wrapper 2013-02-22 17:35:59 +01:00
src qemu: minor monitor lock cleanups 2013-02-25 17:36:51 -07:00
tests tests: avoid segfault if json monitor not present 2013-02-25 17:37:14 -07:00
tools virsh: Add migrate-compcache command 2013-02-22 17:35:59 +01:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore Add autogenerated lxc_protocol.[ch] to gitignore 2013-02-18 08:57:57 -06:00
.gitmodules
.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 Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +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 2013-02-01 09:24:00 -07:00
bootstrap.conf build: more mingw fixes 2013-02-15 15:45:52 -07:00
cfg.mk hacking: Add some details to handle Valgrind output 2013-02-07 14:08:14 -05:00
ChangeLog-old
configure.ac Release of libvirt-1.0.2 2013-01-30 10:42:05 +01:00
COPYING.LIB
HACKING Turn virSecurityManager into a virObjectLockable 2013-02-11 12:33:41 +00:00
libvirt.pc.in
libvirt.spec.in spec: Fix minor changelog issues 2013-02-05 10:00:32 +01:00
Makefile.am build: Fix AUTHORS generation 2012-12-17 21:17:55 +01:00
Makefile.nonreentrant
mingw-libvirt.spec.in spec: indent %if to make it easier to see conditions 2013-01-21 10:36:14 -07:00
README
README-hacking
run.in run: license as LGPL 2013-02-23 14:03:19 -07:00
TODO

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>