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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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c53ba61b21
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Daniel P. Berrange c53ba61b21 Fix startup of LXC containers with filesystems containing symlinks 
Given an LXC guest with a root filesystem path of

  /export/lxc/roots/helloworld/root

During startup, we will pivot the root filesystem to end up
at

  /.oldroot/export/lxc/roots/helloworld/root

We then try to open

  /.oldroot/export/lxc/roots/helloworld/root/dev/pts

Now consider if '/export/lxc' is an absolute symlink pointing
to '/media/lxc'. The kernel will try to open

  /media/lxc/roots/helloworld/root/dev/pts

whereas it should be trying to open

  /.oldroot//media/lxc/roots/helloworld/root/dev/pts

To deal with the fact that the root filesystem can be moved,
we need to resolve symlinks in *any* part of the filesystem
source path.

* src/libvirt_private.syms, src/util/util.c,
  src/util/util.h: Add virFileResolveAllLinks to resolve
  all symlinks in a path
* src/lxc/lxc_container.c: Resolve all symlinks in filesystem
  paths during startup
2012-01-18 13:34:42 +00:00
.gnulib@dd6b2d751b build: fix bootstrap on fresh clone 2012-01-16 11:23:34 -07:00
daemon domiftune: clean up previous patches 2012-01-02 14:35:12 -07:00
docs Add new attribute wrpolicy to <driver> element 2012-01-17 15:37:42 -07:00
examples Permission change for systemtap examples. 2012-01-17 15:42:01 -07:00
gnulib build: update to latest gnulib 2012-01-12 15:47:54 -07:00
include Added new option to virsh net-dumpxml called --inactive 2012-01-11 13:15:09 -07:00
m4 build: reduce warnings from older gcc 2011-12-05 10:14:55 -07:00
po Release of libvirt-0.9.9 2012-01-07 12:18:06 +08:00
python domiftune: Add API virDomain{S,G}etInterfaceParameters 2011-12-29 18:24:43 +08:00
src Fix startup of LXC containers with filesystems containing symlinks 2012-01-18 13:34:42 +00:00
tests Add new attribute wrpolicy to <driver> element 2012-01-17 15:37:42 -07:00
tools virsh domiflist: change output 2012-01-13 08:16:17 -07:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore Define keepalive protocol 2011-11-24 11:44:08 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: use mailmap, not AUTHORS, for secondary addresses 2011-11-11 08:56:19 -07:00
AUTHORS Added check for maximum number of vcpus exceeding topology limit 2012-01-12 16:02:08 -07:00
autobuild.sh Disable python explicitly in mingw32 autobuild 2011-12-19 13:44:18 +00:00
autogen.sh build: allow for local gnulib diffs 2011-11-09 09:03:33 -07:00
bootstrap build: fix bootstrap on fresh clone 2012-01-16 11:23:34 -07:00
bootstrap.conf build: update to latest gnulib 2012-01-12 15:47:54 -07:00
cfg.mk build: update to latest gnulib 2011-12-01 14:12:59 -07:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac Disable netcf if building without libvirtd 2012-01-11 15:01:54 +00:00
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
libvirt.spec.in Remove dmidecode dependancy outside PC arches 2012-01-18 00:22:17 +08:00
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 spec: make it easier to autoreconf when building rpm 2011-12-08 09:49:50 -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
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>