Commit Graph

195 Commits

Author SHA1 Message Date
Michal Privoznik
a602e90bc1 daemon: Run virStateCleanup conditionally
https://bugzilla.redhat.com/show_bug.cgi?id=1033061

Currently, initialization of drivers is done in a separate thread. This
is done for several reasons: a driver that is initialized may require
running event loop, it may take ages to initialize driver (e.g. due to
autostarting domains). While the thread is spawn and run, the main()
continues its execution. However, if something goes bad, or the event
loop is just exited (e.g. due to a --timeout or SIGINT) we try to
cleanup all the drivers. So we have two threads running Initialize() and
Cleanup() concurrently. This may result in accessing stale pointers -
e.g. netcf driver will free() itself in stateCleanup callback, while the
init thread may come, open a dummy connection in order to autostart some
domains and voilà: do_open() iterates over interface drivers and
accesses stale netcf driver.

The fix consists in not running stateCleanup if the init thread is still
running.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2013-12-03 14:32:08 +01:00
Daniel P. Berrange
1e4a02bdfe Remove all direct use of getenv
Unconditional use of getenv is not secure in setuid env.
While not all libvirt code runs in a setuid env (since
much of it only exists inside libvirtd) this is not always
clear to developers. So make all the code paranoid, even
if it only ever runs inside libvirtd.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-10-21 14:03:52 +01:00
Christophe Fergeau
1533322211 daemon: Remove more hardcoded paths from help output
A previous patch used existing #define for the various files in /etc/pki
instead of hardcoding them in the help output. However I missed that
remote_driver.h contains #define for more paths that are present
in the daemon help output.
This commit uses the existing constants for the path to the
configuration file and to the libvirt sockets.
2013-09-19 09:32:42 +02:00
Christophe Fergeau
d0d013d9fb daemon: Don't hardcode pki paths in help output
There are constants for these paths in remote_driver.h so we can
use these rather than duplicating them in the help output.

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2013-09-18 07:56:38 -06:00
Christophe Fergeau
521b78d0af daemon: Fix 'caert.pem' typo in privileged help output
The help message indicates that the CA certificate is
$sysconfdir/pki/CA/caert.pem while the actual path is
$sysconfdir/pki/CA/cacert.pem

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2013-09-18 07:56:25 -06:00
Daniel P. Berrange
63ba687f2b Properly handle -h / -V for --help/--version aliases in virtlockd/libvirtd
The virtlockd/libvirtd daemons had listed '?' as the short option
for --help. getopt_long uses '?' for any unknown option. We want
to be able to distinguish unknown options (which use EXIT_FAILURE)
from correct usage of help (which should use EXIT_SUCCESS). Thus
we should use 'h' as a short option for --help. Also add this to
the man page docs

The virtlockd/libvirtd daemons did not list any short option
for the --version arg. Add -V as a valid short option, since
-v is already used for --verbose.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-08-13 14:06:01 +01:00
Michal Privoznik
1199edb1d4 Introduce max_queued_clients
This configuration knob lets user to set the length of queue of
connection requests waiting to be accept()-ed by the daemon. IOW, it
just controls the @backlog passed to listen:

  int listen(int sockfd, int backlog);
2013-08-05 11:03:01 +02:00
Michal Privoznik
1b3e1d3ba5 Adapt to VIR_ALLOC and virAsprintf in daemon/* 2013-07-10 11:07:31 +02:00
Daniel P. Berrange
ed3bac713c Setup default access control manager in libvirtd
Add a new 'access_drivers' config parameter to the libvirtd.conf
configuration file. This allows admins to setup the default
access control drivers to use for API authorization. The same
driver is to be used by all internal drivers & APIs

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-06-24 15:24:36 +01:00
Daniel P. Berrange
ba5f3c7c8e Move VirtualBox driver into libvirtd
Change the build process & driver initialization so that the
VirtualBox driver is built into libvirtd, instead of libvirt.so
This change avoids the VirtualBox GPLv2-only license causing
compatibility problems with libvirt.so which is under the
GPLv2-or-later license.

NB this change prevents use of the VirtualBox driver on the
Windows platform, until such time as libvirtd can be made
to work there.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-05-16 16:28:53 +01:00
Michal Privoznik
a54434f4ba Adapt to VIR_STRDUP and VIR_STRNDUP in daemon/* 2013-05-05 12:17:12 +02:00
Michal Privoznik
7c9a2d88cd virutil: Move string related functions to virstring.c
The source code base needs to be adapted as well. Some files
include virutil.h just for the string related functions (here,
the include is substituted to match the new file), some include
virutil.h without any need (here, the include is removed), and
some require both.
2013-05-02 16:56:55 +02:00
Osier Yang
bc95be5dea cleanup: Remove the duplicate header
Detected by a simple Shell script:

for i in $(git ls-files -- '*.[ch]'); do
    awk 'BEGIN {
        fail=0
    }
    /# *include.*\.h/{
        match($0, /["<][^">]*[">]/)
        arr[substr($0, RSTART+1, RLENGTH-2)]++
    }
    END {
        for (key in arr) {
            if (arr[key] > 1) {
                fail=1
                printf("%d %s\n", arr[key], key)
            }
        }
        if (fail == 1)
            exit 1
    }' $i

    if test $? != 0; then
        echo "Duplicate header(s) in $i"
    fi
done;

A later patch will add the syntax-check to avoid duplicate
headers.
2013-04-17 15:49:35 +08:00
Hu Tao
47e1767725 call virstateCleanup to do the cleanup before libvirtd exits 2013-01-16 17:18:59 -07:00
Daniel P. Berrange
509eb51e7c Implement the RPC protocol for the libvirt-lxc.la library
Add the infrastructure for the libvirt-lxc.la library to
the remote protocol client and daemon

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-01-15 18:16:53 +00:00
Daniel P. Berrange
bccd4a8cbc Rename HAVE_GNUTLS to WITH_GNUTLS 2013-01-14 13:26:47 +00:00
Daniel P. Berrange
321a7d53f3 Convert HAVE_SASL to WITH_SASL
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-01-11 11:03:23 +00:00
Daniel P. Berrange
f587c27768 Make TLS support conditional
Add checks for existence of GNUTLS and automatically disable
it if not found.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-01-08 20:57:31 +00:00
Daniel P. Berrange
f24404a324 Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
Daniel P. Berrange
e861b31275 Rename uuid.{c,h} to viruuid.{c,h} 2012-12-21 11:19:49 +00:00
Daniel P. Berrange
44f6ae27fe Rename util.{c,h} to virutil.{c,h} 2012-12-21 11:19:49 +00:00
Daniel P. Berrange
404174cad3 Rename threads.{c,h} to virthread.{c,h} 2012-12-21 11:19:49 +00:00
Daniel P. Berrange
ab9b7ec2f6 Rename memory.{c,h} to viralloc.{c,h} 2012-12-21 11:17:14 +00:00
Daniel P. Berrange
30f3a005ff Rename hooks.{c,h} to virhook.{c,h} 2012-12-21 11:17:13 +00:00
Daniel P. Berrange
0f8454101d Rename conf.{c,h} to virconf.{c,h} 2012-12-21 11:17:13 +00:00
Guido Günther
6856b93710 Inhibit daemon shutdown during driver initialization
As of 1a50ba2cb0 qemu capabilities probing
takes longer since we timeout waiting for the monitor socket. When
probing qemu for different architectures this can add up so the daemon
auto shutdown timeout is reached and the client doesn't have a chance
to connect. To avoid that inhibit daemon shutdown during driver
initialization (which includes capabilities probing).

This fixes

	http://honk.sigxcpu.org:8001/job/libvirt-tck-debian-wheezy-qemu-session/227/
2012-12-06 20:27:09 +01:00
Alexander Larsson
b88b171731 Shut down session libvirtd cleanly on host shutdown/user logout
When the session dies or when the system is going to be shut down
we issue a virStateStop() call to instruct drivers to prepare to
be stopped. This will remove any previously acquire inhibitions.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-12-04 12:14:04 +00:00
Daniel P. Berrange
79b8a56995 Replace polling for active VMs with signalling by drivers
Currently to deal with auto-shutdown libvirtd must periodically
poll all stateful drivers. Thus sucks because it requires
acquiring both the driver lock and locks on every single virtual
machine. Instead pass in a "inhibit" callback to virStateInitialize
which drivers can invoke whenever they want to inhibit shutdown
due to existance of active VMs.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-12-04 12:14:04 +00:00
Daniel P. Berrange
1c04f99970 Remove spurious whitespace between function name & open brackets
The libvirt coding standard is to use 'function(...args...)'
instead of 'function (...args...)'. A non-trivial number of
places did not follow this rule and are fixed in this patch.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-11-02 13:36:49 +00:00
Eric Blake
5c731eb8a5 docs: libvirtd no longer uses abstract namespace
Commit 905be03d2 quit using the abstract namespace, but didn't
update the --help text to match.

* daemon/libvirtd.c (daemonUsage): Correct socket listing.
2012-10-31 10:12:53 -06:00
Cole Robinson
eba36a3878 daemon: Fix LIBVIRT_DEBUG=1 default output
This commit changes the behavior of LIBVIRT_DEBUG=1 libvirtd:

$ git show 7022b09111
commit 7022b09111
Author: Daniel P. Berrange <berrange@redhat.com>
Date:   Thu Sep 27 13:13:09 2012 +0100

    Automatically enable systemd journal logging

    Probe to see if the systemd journal is accessible, and if
    so enable logging to the journal by default, rather than
    stderr (current default under systemd).

Previously  'LIBVIRT_DEBUG=1 /usr/sbin/libvirtd' would show all debug
output to stderr, now it send debug output to the journal.

Only use the journal by default if running in daemon mode, or
if stdin is _not_ a tty. This should make libvirtd launched from
systemd use the journal, but preserve the old behavior in most
situations.
2012-10-25 16:46:23 -04:00
Daniel P. Berrange
3cfc3d7d2c Add JSON serialization of virNetServerClientPtr objects for process re-exec()
Add two new APIs virNetServerClientNewPostExecRestart and
virNetServerClientPreExecRestart which allow a virNetServerClientPtr
object to be created from a JSON object and saved to a
JSON object, for the purpose of re-exec'ing a process.

This includes serialization of the connected socket associated
with the client

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-10-16 15:45:55 +01:00
Daniel P. Berrange
7022b09111 Automatically enable systemd journal logging
Probe to see if the systemd journal is accessible, and if
so enable logging to the journal by default, rather than
stderr (current default under systemd).

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-09-28 16:02:58 +01:00
Daniel P. Berrange
90af1babd4 Don't initialize logging twice in libvirtd
The virInitialize function initializes logging from the env,
so there is no need for another call to virLogSetFromEnv

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-09-28 10:55:25 +01:00
Daniel P. Berrange
9467ab6074 Move virProcess{Kill,Abort,TranslateStatus} into virprocess.{c,h}
Continue consolidation of process functions by moving some
helpers out of command.{c,h} into virprocess.{c,h}

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-09-26 10:09:57 +01:00
Daniel P. Berrange
0fb58ef5cd Rename virPid{Abort,Wait} to virProcess{Abort,Wait}
Change "Pid" to "Process" to align with the virProcessKill
API naming prefix

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-09-26 10:09:57 +01:00
Eric Blake
4ecb723b9e maint: fix up copyright notice inconsistencies
https://www.gnu.org/licenses/gpl-howto.html recommends that
the 'If not, see <url>.' phrase be a separate sentence.

* tests/securityselinuxhelper.c: Remove doubled line.
* tests/securityselinuxtest.c: Likewise.
* globally: s/;  If/.  If/
2012-09-20 16:30:55 -06:00
Doug Goldstein
b95ad92e05 build: define WITH_INTERFACE for the driver
Based exclusively on work by Eric Blake in a patch posted with the same
subject. However some modifications related to comments and my plans to
add another backend.

Added WITH_INTERFACE as the only automake variable deciding whether to
build the driver and using WITH_NETCF to identify that we're wanting to
use the netcf library as the backend.

* configure.ac: Added with_interface
* src/interface/netcf_driver.c: Renamed..
* src/interface/interface_backend_netcf.c: ..to this to match storage.
* src/interface/netcf_driver.h: Renamed..
* src/interface/interface_driver.h: ..to this.
* daemon/Makefile.am: Respect WITH_INTERFACE and WITH_NETCF.
* libvirt.spec.in: Add RPM support for --with-interface
2012-09-19 08:27:01 -06:00
Jim Fehlig
f781e27653 Fix xen driver following changes to make it stateful
Recent work to improve support for loadable driver modules introduced
a regression in the xen driver.  The legacy xen driver is now a
stateful, libvirtd driver but was not being registered when building
without driver modules.

A slight behavior change was also noted in the xen drivers when
built as driver modules.  Previously, explicitly specifying a
connection URI was not necessary, but now

Compiled against library: libvirt 0.10.0
Using library: libvirt 0.10.0
Using API: QEMU 0.10.0
error: failed to get the hypervisor version
error: internal error Cannot find suitable emulator for x86_64

The xen drivers need to be registered before the qemu driver since
the qemu driver will return success with a null connection URI.
This ordering is safe since the xen drivers will decline when not
running the xen kernel.
2012-08-31 10:28:55 +08:00
Daniel Veillard
d3bbe33880 Portability fixes for non-linux or old linux platforms
The commits d575679401 and
080bf330e3 made use directly of
macro defined in recent linux netlink version. Make those
part conditional on the definition

* daemon/libvirtd.c: do not use NETLINK_ROUTE and NETLINK_KOBJECT_UEVENT
  without some check first
2012-08-29 09:21:38 +08:00
Tang Chen
080bf330e3 Add uevent netlink service.
This patch adds a new netlink service with NETLINK_KOBJECT_UEVENT
protocol hotplug event.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
2012-08-22 18:26:15 +08:00
Tang Chen
15a71e6059 Introduce virNetlinkEventServiceStopAll() to stop all netlink services.
This patch introduce virNetlinkEventServiceStopAll() to stop
all the monitors to receive netlink messages for libvirtd.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
2012-08-22 18:23:58 +08:00
Tang Chen
d575679401 Improve netlink to support all protocol.
This patch improve all the API in virnetlink.c to support
all kinds of netlink protocols, and make all netlink sockets
be able to join in groups.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
2012-08-22 18:23:58 +08:00
Jiri Denemark
15f5e16f4e daemon: Autodetect lock driver directory
When running libvirtd from a build directory, libvirtd would load lock
drivers from system directory unless explicitly overridden by setting
LIBVIRT_LOCK_MANAGER_PLUGIN_DIR environment variable. Since we already
autodetect driver directory if libvirt is build with driver modules, we
can use the same trick to automagically set lock driver directory.
2012-08-21 18:05:19 +02:00
Doug Goldstein
c7447ab147 Update libvirtd --help output to match code
Updated the paths that libvirtd --help says are used when run as
non-root to match what the code actually does.
2012-08-15 21:40:39 +08:00
Daniel P. Berrange
39b5e4d4d8 Refactor RPC client private data setup
Currently there is a hook function that is invoked when a
new client connection comes in, which allows an app to
setup private data. This setup will make it difficult to
serialize client state during process re-exec(). Change to
a model where the app registers a callback when creating
the virNetServerPtr instance, which is used to allocate
the client private data immediately during virNetClientPtr
construction.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-08-15 10:59:10 +01:00
Daniel P. Berrange
958499b0c1 Turn virNetServer* into virObject instances
Make all the virNetServer* objects use the virObject APIs
for reference counting

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-08-07 11:47:55 +01:00
Daniel P. Berrange
e10e1969d5 Turn virNetTLSContext and virNetTLSSession into virObject instances
Make virNetTLSContext and virNetTLSSession use the virObject
APIs for reference counting

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-08-07 11:47:41 +01:00
Jiri Denemark
b5c5ad365e daemon: Portable auto-detection of driver module directory
When running libvirtd from a build directory on a system with unmodified
libtool, libvirtd's binary is not renamed as "lt-libvirtd". Check for
"/daemon/.libs/libvirtd" in addition to "lt-libvirtd".
2012-08-02 16:17:12 +02:00
Daniel P. Berrange
b49890de82 Remove manual one-shot global initializers
Remove the use of a manually run virLogStartup and
virNodeSuspendInitialize methods. Instead make sure they
are automatically run using VIR_ONCE_GLOBAL_INIT

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-08-02 11:50:46 +01:00