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709b0f37c5
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Peter Krempa 709b0f37c5 snapshot: qemu: Fix segfault and vanishing snapshots when redefining 
When the disk alignment check done while redefining an existing snapshot
failed, the qemu driver attempted to free the existing snapshot. As in
the cleanup path the definition of the snapshot wasn't assigned, the
cleanup code dereferenced a NULL pointer.

This patch changes the behavior on error paths while redefining snapshot
in two ways:

1) On failure, modifications done on the snapshot definition object are
rolled back.

2) The previous definition of the data isn't freed until it's certain it
won't be needed any more.

This change avoids the segfault and additionally the snapshot doesn't
vanish if redefinition fails for some reason.
2013-01-05 08:40:01 +01:00
.gnulib@61c7b1e32e build: fix build with optimization enabled 2013-01-03 10:12:47 -07:00
build-aux Document bracket whitespace rules & add syntax-check rule 2012-11-02 14:00:32 +00:00
daemon Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
docs Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
examples examples: Fix balloon event callback 2012-12-11 13:25:50 +01:00
gnulib maint: update to latest gnulib 2013-01-02 09:38:30 -07:00
include api: Add API to tunnel a guest channel via stream 2013-01-04 17:10:55 -07:00
m4 build: make broken -Wlogical-op test be gcc-only 2012-12-19 12:21:09 -07:00
po conf: Rename virconsole.* to virchrdev.* 2013-01-04 17:26:30 -07:00
python python: Adapt to virevent rename 2012-12-28 16:22:09 +01:00
src snapshot: qemu: Fix segfault and vanishing snapshots when redefining 2013-01-05 08:40:01 +01:00
tests tests: check and handle error for virAsprintf() calls 2013-01-04 10:57:20 -07:00
tools Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore .gitignore: add tests/sysinfotest 2012-12-17 14:40:48 -05:00
.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 Added Ján Tomko to the commiters list 2012-12-18 11:08:01 +08:00
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 2013-01-02 09:38:30 -07:00
bootstrap.conf build: use autobuild module to make build logs nicer 2013-01-02 16:43:58 -07:00
cfg.mk Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac conf: Rename console-specific identifiers to be more generic 2013-01-04 17:43:21 -07:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Document bracket whitespace rules & add syntax-check rule 2012-11-02 14:00:32 +00:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in spec: Do not install *.py[co] in python examples 2012-12-18 18:03:31 +01:00
Makefile.am build: Fix AUTHORS generation 2012-12-17 21:17:55 +01:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw-libvirt.spec.in build: fix mingw rpm build 2013-01-04 17:06:39 -07:00
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 Add a virtlockd client as a lock driver impl 2012-12-13 15:26:57 +00:00
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>