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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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Daniel P. Berrange e4e69e899e Apply security label when entering LXC namespaces 
Add a new virDomainLxcEnterSecurityLabel() function as a
counterpart to virDomainLxcEnterNamespaces(), which can
change the current calling process to have a new security
context. This call runs client side, not in libvirtd
so we can't use the security driver infrastructure.

When entering a namespace, the process spawned from virsh
will default to running with the security label of virsh.
The actual desired behaviour is to run with the security
label of the container most of the time. So this changes
virsh lxc-enter-namespace command to invoke the
virDomainLxcEnterSecurityLabel method.

The current behaviour is:

LABEL                             PID TTY          TIME CMD
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 1 pts/0 00:00:00 systemd
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 3 pts/1 00:00:00 sh
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 24 ? 00:00:00 systemd-journal
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 29 ? 00:00:00 dhclient
staff_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 47 ? 00:00:00 ps

Note the ps command is running as unconfined_t,  After this patch,

The new behaviour is this:

virsh -c lxc:/// lxc-enter-namespace dan -- /bin/ps -eZ
LABEL                             PID TTY          TIME CMD
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 1 pts/0 00:00:00 systemd
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 3 pts/1 00:00:00 sh
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 24 ? 00:00:00 systemd-journal
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 32 ? 00:00:00 dhclient
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 38 ? 00:00:00 ps

The '--noseclabel' flag can be used to skip security labelling.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-03-13 15:16:37 +00:00
.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 Remove hack using existance of an 'identity' string to disable auth 2013-03-12 18:07:17 +00:00
docs docs: Clarify semantics of sparse storage volumes 2013-03-12 09:03:14 +01:00
examples hellolibvirt: Adjust code to use new APIs 2013-03-04 17:36:03 -05:00
gnulib maint: update to latest gnulib 2013-01-02 09:38:30 -07:00
include Apply security label when entering LXC namespaces 2013-03-13 15:16:37 +00:00
m4 Fix typo in configure.ac causing $LIBS to gain a copy of $CFLAGS 2013-02-05 18:04:16 +00:00
po Apply security label when entering LXC namespaces 2013-03-13 15:16:37 +00:00
python Apply security label when entering LXC namespaces 2013-03-13 15:16:37 +00:00
src Apply security label when entering LXC namespaces 2013-03-13 15:16:37 +00:00
tests virCaps: conf: start splitting out irrelevat data 2013-03-13 09:27:14 +01:00
tools Apply security label when entering LXC namespaces 2013-03-13 15:16:37 +00:00
.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 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 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 tests: uniformly report test failures 2013-02-25 17:38:11 -07:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac Release of libvirt 1.0.3 2013-03-05 12:00:53 +08:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Turn virSecurityManager into a virObjectLockable 2013-02-11 12:33:41 +00:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in Release of libvirt 1.0.3 2013-03-05 12:00:53 +08:00
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 spec: indent %if to make it easier to see conditions 2013-01-21 10:36:14 -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 run: license as LGPL 2013-02-23 14:03:19 -07:00
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>