libvirt/src
Stefan Berger b7d00de2bd Fix libvirt upgrade path when nwfilter is used
Between revision 65fb9d49 and before this patch, an upgrade of libvirt while
VMs are running and instantiating iptables filtering rules due to nwfilter
rules, may leave stray iptables rules behind when shutting VMs down.
Left-over iptables rules may look like this:

Chain FP-vnet0 (1 references)
target     prot opt source               destination         
DROP       tcp  --  0.0.0.0/0            0.0.0.0/0            tcp spt:122
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           

[...]

Chain libvirt-out (1 references)
target     prot opt source               destination         
FO-vnet0   all  --  0.0.0.0/0            0.0.0.0/0           [goto]  PHYSDEV match --physdev-out vnet0



The reason is that the recent nwfilter code only removed filtering rules in
the libvirt-out chain that contain the --physdev-is-bridged parameter.
Older rules didn't match and were not removed.

Note that the user-defined chain FO-vnet0 could not be removed due to the
reference from the rule in libvirt-out.

Often the work around may be done through

service iptables restart
kill -SIGHUP $(pidof libvirtd)

This patch now also removes older libvirt versions' iptables rules.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2013-02-15 21:33:37 -05:00
..
conf Release VM lock before acquiring virDomainObjListPtr lock 2013-02-12 11:06:03 +00:00
cpu util: use new virendian.h macros 2013-02-12 09:00:17 -07:00
esx Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
hyperv hyperv: Simplify hypervPrivate pointer handling in hypervOpen 2013-02-02 12:33:33 +01:00
interface interface: Need to initialize 'ifaces_list' 2013-01-22 17:29:26 +01:00
libxl Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
locking docs: aesthetical cleanups 2013-01-30 09:37:03 +01:00
lxc Turn virSecurityManager into a virObjectLockable 2013-02-11 12:33:41 +00:00
network network: Remove conditional settings to resolve resource leak 2013-02-05 16:51:07 -05:00
node_device nodedev: Implement virNodeDeviceLookupSCSIHostByWWN 2013-02-12 00:23:57 +08:00
nwfilter Fix libvirt upgrade path when nwfilter is used 2013-02-15 21:33:37 -05:00
openvz Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
parallels Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
phyp Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
qemu qemu: let virCommand set child process security labels/uid/gid 2013-02-13 16:11:16 -05:00
remote remote: Wire up the remote protocol 2013-02-12 00:23:57 +08:00
rpc remote: Wire up the remote protocol 2013-02-12 00:23:57 +08:00
secret Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
security security: add new virSecurityManagerSetChildProcessLabel API 2013-02-13 16:11:16 -05:00
storage regex: gnulib guarantees that we have regex support 2013-02-15 13:01:23 -07:00
test Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
uml Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
util storage: don't follow backing chain symlinks too eagerly 2013-02-15 16:07:01 -07:00
vbox vbox: Don't overwrite errors returned by virDomainDeviceDefParse 2013-02-14 09:05:36 +01:00
vmware Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
vmx Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
xen xen: clean up the mess with cpumap 2013-02-12 09:00:17 -07:00
xenapi Turn virCapabilities into a virObject 2013-02-08 11:34:26 +00:00
xenxs Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
check-symfile.pl Check for private symbols presence as well 2012-10-05 15:04:56 +02:00
check-symsorting.pl Fix sorting of libvirt_private.syms and add syntax check rule 2012-12-12 10:45:37 +00:00
datatypes.c Allow for multi-level inheritance of virObject classes 2013-01-15 19:21:31 +00:00
datatypes.h Rename threads.{c,h} to virthread.{c,h} 2012-12-21 11:19:49 +00:00
driver.c Rename util.{c,h} to virutil.{c,h} 2012-12-21 11:19:49 +00:00
driver.h Introduce API virNodeDeviceLookupSCSIHostByWWN 2013-02-12 00:23:57 +08:00
dtrace2systemtap.pl maint: fix up copyright notice inconsistencies 2012-09-20 16:30:55 -06:00
fdstream.c Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
fdstream.h Rename command.{c,h} to vircommand.{c,h} 2012-12-21 11:17:13 +00:00
gnutls_1_0_compat.h maint: fix up copyright notice inconsistencies 2012-09-20 16:30:55 -06:00
internal.h Introduce an LXC specific public API & library 2013-01-14 13:58:34 +00:00
libvirt_atomic.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_daemon.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_driver_modules.syms maint: one missed syms file 2013-01-26 09:59:12 -07:00
libvirt_esx.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_internal.h Add support for offline migration 2012-12-10 21:52:15 +01:00
libvirt_libssh2.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_linux.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_lxc.syms Introduce an LXC specific public API & library 2013-01-14 13:58:34 +00:00
libvirt_openvz.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_private.syms util: virSetUIDGIDWithCaps - change uid while keeping caps 2013-02-13 16:11:16 -05:00
libvirt_probes.d Turn virNetClient* into virObject instances 2012-08-07 11:47:55 +01:00
libvirt_public.syms Introduce API virNodeDeviceLookupSCSIHostByWWN 2013-02-12 00:23:57 +08:00
libvirt_qemu_probes.d build: fix binary location in stap files --with-driver-modules 2012-08-10 23:11:26 -04:00
libvirt_qemu.syms qemu-agent: available in 0.10.0 2012-08-23 13:05:52 -06:00
libvirt_sasl.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_vmx.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt_xenxs.syms maint: make it easier to sort syms files 2013-01-25 08:33:09 -07:00
libvirt-lxc.c Introduce an LXC specific public API & library 2013-01-14 13:58:34 +00:00
libvirt-qemu.c Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
libvirt.c Introduce API virNodeDeviceLookupSCSIHostByWWN 2013-02-12 00:23:57 +08:00
libvirt.conf Allow overriding default URI in config file 2012-03-15 11:20:17 +00:00
lxc_protocol-structs build: add new file, for lxc_protocol checking 2013-01-15 12:01:22 -07:00
Makefile.am build: more mingw fixes 2013-02-15 15:45:52 -07:00
nodeinfo.c Ensure nodeinfo struct is initialized to zero 2013-01-24 14:13:26 +00:00
nodeinfo.h cpustat: fix regression when cpus are offline 2012-10-26 15:34:52 -06:00
qemu_protocol-structs agent: add remote driver support 2012-08-23 19:05:50 +08:00
README hyperv: Add basic documentation 2011-08-26 17:52:55 +02:00
remote_protocol-structs build: fix make check of remote_protocol-structs 2013-02-11 15:34:49 -05:00
virkeepaliveprotocol-structs build: Properly generate and check virkeepaliveprotocol-structs 2011-11-24 14:44:04 +01:00
virnetprotocol-structs Extend RPC protocol to allow FD passing 2011-10-28 10:27:15 +01:00

       libvirt library code README
       ===========================

The directory provides the bulk of the libvirt codebase. Everything
except for the libvirtd daemon and client tools. The build uses a
large number of libtool convenience libraries - one for each child
directory, and then links them together for the final libvirt.so,
although some bits get linked directly to libvirtd daemon instead.

The files directly in this directory are supporting the public API
entry points & data structures.

There are two core shared modules to be aware of:

 * util/  - a collection of shared APIs that can be used by any
            code. This directory is always in the include path
            for all things built

 * conf/  - APIs for parsing / manipulating all the official XML
            files used by the public API. This directory is only
            in the include path for driver implementation modules

 * vmx/   - VMware VMX config handling (used by esx/ and vmware/)


Then there are the hypervisor implementations:

 * esx/          - VMware ESX and GSX support using vSphere API over SOAP
 * hyperv/       - Microsoft Hyper-V support using WinRM
 * lxc/          - Linux Native Containers
 * openvz/       - OpenVZ containers using cli tools
 * phyp/         - IBM Power Hypervisor using CLI tools over SSH
 * qemu/         - QEMU / KVM using qemu CLI/monitor
 * remote/       - Generic libvirt native RPC client
 * test/         - A "mock" driver for testing
 * uml/          - User Mode Linux
 * vbox/         - Virtual Box using native API
 * vmware/       - VMware Workstation and Player using the vmrun tool
 * xen/          - Xen using hypercalls, XenD SEXPR & XenStore
 * xenapi/       - Xen using libxenserver


Finally some secondary drivers that are shared for several HVs.
Currently these are used by LXC, OpenVZ, QEMU, UML and Xen drivers.
The ESX, Hyper-V, Power Hypervisor, Remote, Test & VirtualBox drivers all
implement the secondary drivers directly

 * cpu/          - CPU feature management
 * interface/    - Host network interface management
 * network/      - Virtual NAT networking
 * nwfilter/     - Network traffic filtering rules
 * node_device/  - Host device enumeration
 * secret/       - Secret management
 * security/     - Mandatory access control drivers
 * storage/      - Storage management drivers


Since both the hypervisor and secondary drivers can be built as
dlopen()able modules, it is *FORBIDDEN* to have build dependencies
between these directories. Drivers are only allowed to depend on
the public API, and the internal APIs in the util/ and conf/
directories