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Eric Blake a20c3aafbe qemu: refactor blockinfo job handling 
In order for a future patch to virDomainListGetStats to reuse
some code for determining disk usage of offline domains, we
need to make it easier to pull out part of the guts of grabbing
blockinfo.  The current implementation grabs a job fairly late
in the game, while getstats will already own a job; reordering
things so that the job is always grabbed up front in both
functions will make it easier to pull out the common code.
This patch results in grabbing a job in cases where one was not
previously needed, but as it is a query job, it should not be
noticeably slower.

This patch touches the same code as the fix for CVE-2014-6458
(commit b799259); in that patch, we avoided hotplug changing
a disk reference during the time of obtaining a monitor lock
by copying all data we needed and no longer referencing disk;
this patch goes the other way and ensures that by holding the
job, the disk cannot be changed so we no longer need to worry
about the disk being invalidated across the monitor lock.

* src/qemu/qemu_driver.c (qemuDomainGetBlockInfo): Rearrange job
control to be outside of disk information.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-12-16 14:12:24 -07:00
.gnulib@3914f31535 maint: update to latest gnulib 2014-12-08 16:48:11 -07:00
build-aux bracket-spacing: Add syntax-check for unnecessary curly brackets 2014-11-14 17:13:36 +01:00
daemon virconf: Introduce VIR_CONF_ULONG 2014-12-15 10:34:18 +01:00
docs storage: unify permission formatting 2014-12-16 15:47:56 +01:00
examples examples: Add support for the guest agent lifecycle event 2014-11-24 15:47:01 +01:00
gnulib maint: update to latest gnulib 2014-01-01 06:02:47 -07:00
include Fix handling of whitespae in preprocessor macros for API generator 2014-12-04 15:00:30 +00:00
m4 avoid using deprecated udev logging functions 2014-12-15 18:08:45 +00:00
po Release of libvirt-1.2.11 2014-12-13 10:43:56 +08:00
src qemu: refactor blockinfo job handling 2014-12-16 14:12:24 -07:00
tests storage: unify permission formatting 2014-12-16 15:47:56 +01:00
tools virsh.pod: Fix typo 2014-12-10 08:18:37 -05:00
.ctags maint: Make ctags work out of the box 2013-07-18 08:47:21 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore gitignore: use wildcard for configure's temporary files 2014-11-06 16:56:21 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: update .mailmap 2014-10-06 08:23:47 -06:00
AUTHORS.in Cleanup maintainers list 2014-10-15 10:16:47 +02:00
autobuild.sh Disable libvirtd by default when building on Win32 2014-04-29 11:30:32 +01:00
autogen.sh maint: detect VPATH builds when checking for gnulib update 2014-06-04 16:06:55 -06:00
bootstrap maint: update to latest gnulib 2014-12-08 16:48:11 -07:00
bootstrap.conf build: Move check for XML::XPath into bootstrap 2014-12-09 08:23:21 +01:00
cfg.mk Replace virDomainSnapshotFree with virObjectUnref 2014-12-02 11:03:41 -05:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h build: fix build of virt-login-shell on systems with older gnutls 2013-10-22 09:41:50 -06:00
configure.ac Post-release version bump for new dev cycle 2014-12-13 10:01:31 +01:00
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 docs: Fix missing curly braces 2014-12-10 11:21:31 +01:00
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 spec: Fix syntax 2014-12-16 09:21:40 +01:00
Makefile.am examples: Introduce domtop 2014-07-18 16:39:54 +02:00
Makefile.nonreentrant maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
mingw-libvirt.spec.in Move virConnect related APIs out of libvirt.h.in 2014-10-24 17:23:51 +01:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking docs: update README-hacking 2014-05-06 16:20:24 -06:00
run.in Add PKG_CONFIG_PATH to run.in script. 2014-06-26 14:32:35 +01:00
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>