The admin server functionality is a generic concept that should be wired
up into all libvirt daemons, but is currently integrated with the
libvirtd code. Move it all into the src/admin directory to prepare for
broader reuse.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Replace the error message during startup of libvirtd with an info
message if audit_level < 2 and audit is not supported by the
kernel. Audit is not supported by the current kernel if the kernel
does not have audit compiled in or if audit is disabled (e.g. by the
kernel cmdline).
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Current cleanup processing is ad-hoc at best - it's led to a couple of
strange and hard to diagnose timing problems and crashes.
So rather than perform cleanup in a somewhat random order, let's
perform cleanup in the exact opposite order of startup.
NB: It is possible that virNetlinkEventServerStart fails and we jump
to cleanup before driversInitialized has been set. That could leave
things inconsistent; however, resolution of that possibility is perhaps
more trouble than it's worth to handle.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Let's be sure we can get a Daemon object before the server object.
This is a more "orderly" way to do things since the svr object would
be added to the dmn object afterwards.
Commit 94c465d0 refactored the logging setup phase but introduced an
issue, where the daemon ignores verbose mode when there are no outputs
defined and the default must be used. The problem is that the default
output was determined too early, thus ignoring the potential '--verbose'
option taking effect. This patch postpones the creation of the default
output to the very last moment when nothing else can change. Since the
default output is only created during the init phase, it's safe to leave
the pointer as NULL for a while, but it will be set eventually, thus not
affecting runtime.
Patch also adjusts both the other daemons.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1442947
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Driver modules proved to be reliable for a long time. Since support for
not building modules complicates the code and makefiles drop it.
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
The DBus conditional was renamed way back:
commit da77f04ed5
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Thu Sep 20 15:05:39 2012 +0100
Convert HAVE_DBUS to WITH_DBUS
but the shutdown inhibit code was not updated. Thus libvirt
was never inhibiting shutdown by a logged in user when VMs
are running.
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Right now, there is a lot of exit points from the function.
Depending on their position they need to copy the same free
calls. This goes against our style where we usually have just one
exit point from the function which also does the necessary free.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
@rundir, allocated by virGetUserRuntimeDirectory, is leaked in case
virFileMakePath fails.
Signed-off-by: Xi Xu <xu.xi8@zte.com.cn>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
SASL context would be initialized even if the corresponding TCP or TLS
sockets are not enabled.
fe772f24a6 attempted to fix the symptom by commenting out the settings,
but that did not fix the root cause. 3c647ee4bb later reverted those
changes so that the more secure algorithm is used.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1450095
When providing explicit x509 cert/key paths in libvirtd.conf,
the user must provide all three. If one or more is missed,
this leads to obscure errors at runtime when negotiating
the TLS session
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Pass the registration function name to virDriverLoadModule so that we
can later call specific functions if necessary (e.g. for testing
purposes). This gets rid of the rather ugly automatic name generator and
unifies the code to load/initialize the modules.
It's also clear which registration function gets called.
Since a successful completion of the calls to openvswitch is expected
a longer timeout should be able to be chosen to account for loaded systems.
Therefore this patch provides the ability to specify the timeout value for
openvswitch calls in the libvirtd configuration file.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Now that virLog{Get,Set}DefaultOutput routines are introduced we can wire them
up to the daemon's logging initialization code. Also, change the order of
operations a bit so that we still strictly honor our precedence of settings:
cmdline > env > config now that outputs and filters are not appended anymore.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Along with an empty string, it should also be possible for users to pass
NULL to the public APIs which in turn would trigger a routine(future
work) responsible for defining an appropriate default logging output
given the current circumstances.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Do not dereference the 'dmn' until after the virStateCleanup is completed.
During initialization, virStateInitialize requires/uses the "dmn" as the
argument to/for the daemonInhibitCallback functions. Thus, cleanup cannot
dereference 'dmn' until after calling the virStateCleanup which calls the
the daemonInhibitCallback using 'dmn'; otherwise, the following crash occurs:
backtrace (shortened a bit)
1 0x00007fd3a791b2e6 in virCondWait (c=<optimized out>, m=<optimized out>)
at util/virthread.c:154
2 0x00007fd3a791bcb0 in virThreadPoolFree (pool=0x7fd38024ee00)
at util/virthreadpool.c:266
3 0x00007fd38edaa00e in qemuStateCleanup () at qemu/qemu_driver.c:1116
4 0x00007fd3a79abfeb in virStateCleanup () at libvirt.c:808
5 0x00007fd3a85f2c9e in main (argc=<optimized out>, argv=<optimized out>)
at libvirtd.c:1660
Thread 1 (Thread 0x7fd38722d700 (LWP 32256)):
0 0x00007fd3a7900910 in virClassIsDerivedFrom
(klass=0xdfd36058d4853, parent=0x7fd3a8f394d0) at util/virobject.c:169
1 0x00007fd3a7900c4e in virObjectIsClass
(anyobj=anyobj@entry=0x7fd3a8f2f850, klass=<optimized out>)
at util/virobject.c:365
2 0x00007fd3a7900c74 in virObjectLock (anyobj=0x7fd3a8f2f850)
at util/virobject.c:317
3 0x00007fd3a7a24d5d in virNetDaemonRemoveShutdownInhibition
(dmn=0x7fd3a8f2f850) at rpc/virnetdaemon.c:547
4 0x00007fd38ed722cf in qemuProcessStop
(driver=driver@entry=0x7fd380103810, vm=vm@entry=0x7fd38025b6d0,
reason=reason@entry=VIR_DOMAIN_SHUTOFF_SHUTDOWN,
asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_NONE, flags=flags@entry=0)
at qemu/qemu_process.c:5786
5 0x00007fd38edd9428 in processMonitorEOFEvent
(vm=0x7fd38025b6d0, driver=0x7fd380103810) at qemu/qemu_driver.c:4588
6 qemuProcessEventHandler (data=<optimized out>, opaque=0x7fd380103810)
at qemu/qemu_driver.c:4632
7 0x00007fd3a791bb55 in virThreadPoolWorker
(opaque=opaque@entry=0x7fd3a8f1e4c0) at util/virthreadpool.c:145
Similar to outputs, parser should do parsing only, thus the 'define' logic
is going to be stripped from virLogParseAndDefineFilters by replacing calls to
this method to virLogSetFilters instead.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since virLogParseAndDefineOutputs is going to be stripped from 'output defining'
logic, replace all relevant occurrences with virLogSetOutputs call to make the
change transparent to all original callers (daemons mostly).
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Right now virLogParse* functions are doing both parsing and defining of filters
and outputs which should be two separate operations. Since the naming is
apparently a bit poor this patch renames these functions to
virLogParseAndDefine* which eventually will be replaced by virLogSet*.
Additionally, virLogParse{Filter,Output} will be later (after the split) reused,
so that these functions do exactly what the their name suggests.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This patch enables admin socket creation in daemon's code, bumps the library
version in libvirt_admin_public.syms, and performs all necessary modifications
to our makefiles so that admin API can finally be included in the tarball,
and eventually become part of an rpm package (a patch later in this series).
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Add a "tls_priority" config option to /etc/libvirt/libvirtd.conf
to allow the administrator to override the built-in default
setting. This only affects the server side configuration.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Extend the virNetTLSContextNew* constructors to allow
the TLS priority string to be passed in, overriding the
compile time default.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When registering admin UNIX socket, a new service is created for it. This
service is incorrectly initialized to be readonly, which is later inherited by
all clients connected to the socket. In libvirt-admin's case there currently
isn't any use for the attribute anyway, but since the socket has root-only
access permissions, the least we can do is to make every admin client
connected to it report readonly as false.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Commits 52a2eef9 and 62be5486 forgot to add these errors to daemon's error
whitelist, i.e. in order to avoid log file pollution with errors like "Domain
not found" or "Server not found" in this case, since these events are valid
and expected to occur.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Daemon config parameter switch between reading host uuid
either from smbios or machine-id:
host_uuid_source = "smbios|machine-id"
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Admin API needs a way of addressing specific clients. Unlike servers, which we
are happy to address by names both because its name reflects its purpose (to
some extent) and we only have two of them (so far), naming clients doesn't make
any sense, since a) each client is an anonymous, i.e. not recognized after a
disconnect followed by a reconnect, b) we can't predict what kind of requests
it's going to send to daemon, and c) the are loads of them comming and going,
so the only viable option is to use an ID which is of a reasonably wide data
type.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Make it possible to build vz driver as a module and don't link it with
libvirt.so statically.
Remove registering it on client's side as far as we start relying on daemon
Signed-off-by: Maxim Nestratov <mnestratov@virtuozzo.com>
Since servers know their name, there is no need to supply such
information twice. Also defeats inconsistencies.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
At first I did not want to do this, but after trying to implement some
newer feaures in the admin API I realized we need that to make our lives
easier. On the other hand they are not saved redundantly and the
virNetServer objects are still kept in a hash table.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This change is merely because admin_server would contain all the code
from dispatchers and helpers to the actual APIs. Admin should have
similar structure to the daemon-side remote driver - dispatchers and
helpers in a separate module, APIs in a separate module.
Best viewed with -M.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Since the daemon can manage and add (at fresh start) multiple servers,
we also should be able to add them from a JSON state file in case of a
daemon restart, so post exec restart support for multiple servers is also
provided. Patch also updates virnetdaemontest accordingly.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Since its introduction in 2011 (particularly in commit f4324e3292),
the option doesn't work. It just effectively disables all incoming
connections. That's because the client private data that contain the
'keepalive_supported' boolean, are initialized to zeroes so the bool is
false and the only other place where the bool is used is when checking
whether the client supports keepalive. Thus, according to the server,
no client supports keepalive.
Removing this instead of fixing it is better because a) apparently
nobody ever tried it since 2011 (4 years without one month) and b) we
cannot know whether the client supports keepalive until we get a ping or
pong keepalive packet. And that won't happen until after we dispatched
the ConnectOpen call.
Another two reasons would be c) the keepalive_required was tracked on
the server level, but keepalive_supported was in private data of the
client as well as the check that was made in the remote layer, thus
making all other instances of virNetServer miss this feature unless they
all implemented it for themselves and d) we can always add it back in
case there is a request and a use-case for it.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Don't listen on the admin socket in the daemon and comment out the
admin devel files out of specfile.
Library is still being compiled and installed in order to link easily
without any disturbing modifications to the daemon code.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
When setting up the daemon networking, new services are created. These
services then have sockets to listen on. Once created, the service
objects are added to corresponding server object. However, during that
process, server increases reference counter of the service object. So,
at the end of the function, we should decrease it again. This way the
service objects will have only 1 reference, but that's okay since
servers are the only objects having a reference.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If the admin service is disabled it would not be allocated, but the NULL
pointer still would be added to the admin server. Since
virNetServerAddService would dereference it, the daemon would crash.
Move the service registration into the block that allocates it.
For this to pe properly separated from other protocols used by the
server, there is second server added which allows access to the whole
virNetDaemon to its clients.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
By default, getaddrinfo() will return addresses for both
IPv4 and IPv6 if both protocols are enabled, and so the
RPC code will listen/connect to both protocols too. There
may be cases where it is desirable to restrict this to
just one of the two protocols, so add an 'int family'
parameter to all the TCP related APIs.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Similarly to other error codes that notify the user that the object does
not exist lower the priority of VIR_ERR_NO_DOMAIN_METADATA to
VIR_LOG_DEBUG when writing the log entry.
In the order of appearance:
* MAX_LISTEN - never used
added by 23ad665c (qemud) and addec57 (lock daemon)
* NEXT_FREE_CLASS_ID - never used, added by 07d1b6b
* virLockError - never used, added by eb8268a4
* OPENVZ_MAX_ARG, CMDBUF_LEN, CMDOP_LEN
unused since the removal of ADD_ARG_LIT in d8b31306
* QEMU_NB_PER_CPU_STAT_PARAM - unused since 897808e
* QEMU_CMD_PROMPT, QEMU_PASSWD_PROMPT - unused since 1dc10a7
* TEST_MODEL_WORDSIZE - unused since c25c18f7
* TEMPDIR - never used, added by 714bef5
* NSIG - workaround around old headers
added by commit 60ed1d2
unused since virExec was moved by commit 02e8691
* DO_TEST_PARSE - never used, added by 9afa006
* DIFF_MSEC, GETTIMEOFDAY - unused since eee6eb6
Libvirt could crash with segfault if user issue "service reload" right
after "service start". One possible way to crash libvirt is to run reload
during initialization of QEMU driver.
It could happen when qemu driver will initialize qemu_driver_lock but
don't have a time to set it's "config" and the SIGHUP arrives. The
reload handler tries to get qemu_drv->config during "virStorageAutostart"
and dereference it which ends with segfault.
Let's ignore all reload requests until all drivers are initialized. In
addition set driversInitialized before we enter virStateCleanup to
ignore reload request while we are shutting down.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1179981
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
libvirtd.c: In function 'daemonSetupAccessManager':
libvirtd.c:730:18: error: declaration of 'driver' shadows
a global declaration [-Werror=shadow]
const char **driver = (const char **)config->access_drivers;
^
In file included from libvirtd.c:95:0:
../src/node_device/node_device_driver.h:43:36: error: shadowed
declaration is here [-Werror=shadow]
extern virNodeDeviceDriverStatePtr driver;
^
For stateless, client side drivers, it is never correct to
probe for secondary drivers. It is only ever appropriate to
use the secondary driver that is associated with the
hypervisor in question. As a result the ESX & HyperV drivers
have both been forced to do hacks where they register no-op
drivers for the ones they don't implement.
For stateful, server side drivers, we always just want to
use the same built-in shared driver. The exception is
virtualbox which is really a stateless driver and so wants
to use its own server side secondary drivers. To deal with
this virtualbox has to be built as 3 separate loadable
modules to allow registration to work in the right order.
This can all be simplified by introducing a new struct
recording the precise set of secondary drivers each
hypervisor driver wants
struct _virConnectDriver {
virHypervisorDriverPtr hypervisorDriver;
virInterfaceDriverPtr interfaceDriver;
virNetworkDriverPtr networkDriver;
virNodeDeviceDriverPtr nodeDeviceDriver;
virNWFilterDriverPtr nwfilterDriver;
virSecretDriverPtr secretDriver;
virStorageDriverPtr storageDriver;
};
Instead of registering the hypervisor driver, we now
just register a virConnectDriver instead. This allows
us to remove all probing of secondary drivers. Once we
have chosen the primary driver, we immediately know the
correct secondary drivers to use.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
