Commit Graph

225 Commits

Author SHA1 Message Date
Ján Tomko
95964058df Do not include cpu_map.h in libvirtd.c
No longer needed after commit dd47723
2015-04-02 10:27:56 +02:00
Ján Tomko
a0482396d7 Remove unused macros
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
2015-04-02 10:27:56 +02:00
Pavel Hrdina
5c756e580f daemon: Fix segfault by reloading daemon right after start
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>
2015-02-18 17:51:54 +01:00
Ján Tomko
d0ab79e9cd Fix shadowed variable warning
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;
                                    ^
2015-01-27 13:43:23 +01:00
Daniel P. Berrange
55ea7be7d9 Removing probing of secondary drivers
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>
2015-01-27 12:02:04 +00:00
Martin Kletzander
cfd9c02802 Remove unnecessary curly brackets in daemon/ and examples/
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-11-14 17:13:00 +01:00
Eric Blake
0fe384f38e audit: use bool for audit log choice
We weren't ever using the value for anything other than being non-zero.

* src/util/viraudit.h (virAuditLog): Change signature.
* src/util/viraudit.c (virAuditLog): Update user.
* daemon/libvirtd.c (main): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-10-29 09:55:09 -06:00
John Ferlan
1f96775866 daemon: Resolve Coverity FORWARD_NULL
Coverity complains that the comparison:

  if (nfds && nfds > ((int)!!sock_path + (int)!!sock_path_ro))

could mean 'sock_path' is NULL. Later in virNetSocketNewListenUNIX
there's a direct dereference of path in the error path:

  if (path[0] != '@')

A bit of sleuthing proves that upon entry to daemonSetupNetworking
there is no way for 'sock_path' to be NULL since daemonUnixSocketPaths
will set up 'sock_file' (although it may not set up 'sock_file_ro')
in all 3 paths.

Adjusted code to add ATTRIBUTE_NONNULL(3) on incoming path parameter and
then fixup the comparison of nfds to be a comparison against 2 or 1
depending on whether sock_path_ro is NULL or not.
2014-09-15 11:01:37 -04:00
Martin Kletzander
8035f2e6f2 remove redundant pidfile path constructions
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-09-15 09:49:34 +02:00
John Ferlan
c77ac79d6b daemon: Resolve Coverity RESOURCE_LEAK
With eblake's help - adjust the checks for stdinfd/stdoutfd to ensure the
values are within the range we expect; otherwise the dup2()'s and subsequent
VIR_CLOSE() calls cause Coverity to believe there's a resource leak.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2014-09-12 06:12:50 -04:00
Michal Privoznik
dbb4cbf532 vbox: Register per partes
Since times when vbox moved to the daemon (due to some licensing
issue) the subdrivers that vbox implements were registered, but not
opened since our generic subdrivers took priority. I've tried to fix
this in 65b7d553f3 but it was not correct. Apparently moving
vbox driver registration upfront changes the default connection URI
which makes some users sad. So, this commit breaks vbox into pieces
and register vbox's network and storage drivers first, and vbox driver
then at the end. This way, the vbox driver is registered in the order
it always was, but its subdrivers are registered prior the generic
ones.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-08-27 08:05:25 +02:00
Zhou Yimin
9eac73eb84 daemon: Fix option -v missing info priority log
Introduce by 63fbcc692.

When start libvirtd with commandline "/usr/sbin/libvirtd -d -l -v",
we expect verbose(info level) log if neither environment variable
nor config file about logging controls is set. But in fact we can't
get any info priority log in the default output file.

The log priority of default output is VIR_LOG_DEFAULT(VIR_LOG_WARN),
so the info log is filtered out.
To record info priority log we must parse option -v before setting the
default output.

After this patch, we get all verbose log in the default output file.

Signed-off-by: Zhou Yimin <zhouyimin@huawei.com>
2014-08-25 16:40:20 +02:00
Martin Kletzander
27a7081c29 daemon: support passing FDs from the calling process
First FD is the RW unix socket to listen on, second one (if
applicable) is the RO unix socket.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-08-22 09:12:13 +02:00
Michal Privoznik
65b7d553f3 daemon: Fix driver registration ordering
There are some stateless drivers which implement subdrivers
(typically vbox and its own network and storage subdrivers). However,
as of ba5f3c7c8e the vbox driver lives in the daemon, not the
client library. This means, in order for vbox (or any stateless domain
driver) to use its subdrivers, it must register before the general
drivers. Later, when the virConnectOpen function goes through the
subdrivers, stateless drivers are searched first. If the connection
request is aiming at stateless driver, it will be opened. Otherwise
the generic subdriver is opened.

The other change done in this commit is moving interface module load a
bit earlier to match the ordering in case libvirt is built without
driver modules.

Reported-by: Taowei Luo <uaedante@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-08-18 11:49:10 +02:00
Peter Krempa
c018efa863 daemon: Limit default log level to journald to VIR_LOG_INFO
Libvirt is really chatty when the DEBUG log level is enabled. When a
host uses journald we'd enable debug logging to journald when only
specifying the debug log level. As journald may employ rate throttling
this would lock up the daemon until it's able to flush all debug
messages.

This patch changes the default log level to VIR_LOG_INFO when using the
default (unconfigured) log output to journald.

To still allow debug logging to journald the user now has to explicitly
specify journald as a log output with priority 1 in the "log_outputs"
configuration option. This patch also changes the config file template
to be explicit about this change and notify the user about the possible
consequence of debug logging into journald.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1121955
2014-08-13 10:29:05 +02:00
Wang Rui
2381af474b daemon: Fix indentation in libvirtd.c
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
2014-08-07 11:03:31 +02:00
Daniel P. Berrange
dd477238bc Use virFileFindResource to locate CPU map XML
Replace use of cpuMapOverride with virFileFindResource
to locate CPU map from build dir.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-04-25 11:59:46 +01:00
Daniel P. Berrange
bc2f42a094 Use virFileFindResource to locate driver plugins
Replace virDriverModuleInitialize with virFileFindResource
usage.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-04-25 11:59:46 +01:00
Daniel P. Berrange
d3c7684220 Use virFileFindResource to locate lock manager plugins
Replace virLockManagerSetPluginDir with virFileFindResource
usage.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-04-25 11:59:46 +01:00
Daniel P. Berrange
391ac4d990 Activate build dir overrides in libvirtd, virtlockd, virsh & tests
Add calls to virFileActivateDirOverride so that the build dir
overrides are activated.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-04-25 11:59:32 +01:00
Nehal J Wani
34542473e5 Fix Memory Leak in daemon/libvirtd.c
Fixes leak introduced by e562e82f

==4937== 64 bytes in 1 blocks are definitely lost in loss record 270 of 405
==4937==    at 0x4A06BE0: realloc (vg_replace_malloc.c:662)
==4937==    by 0x6FA41C4: __vasprintf_chk (vasprintf_chk.c:90)
==4937==    by 0x50C8D29: virVasprintfInternal (stdio2.h:199)
==4937==    by 0x50C8E3A: virAsprintfInternal (virstring.c:362)
==4937==    by 0x11D01A: main (libvirtd.c:1170)

Signed-off-by: Ján Tomko <jtomko@redhat.com>
2014-04-04 07:45:41 +02:00
Ján Tomko
60555fb8ed Indent top-level labels by one space in daemon/ 2014-03-25 14:58:38 +01:00
Daniel P. Berrange
c0c8c1d7bb Remove global log buffer feature entirely
A earlier commit changed the global log buffer so that it only
records messages that are explicitly requested via the log
filters setting. This removes the performance burden, and
improves the signal/noise ratio for messages in the global
buffer. At the same time though, it is somewhat pointless, since
all the recorded log messages are already going to be sent to an
explicit log output like syslog, stderr or the journal. The
global log buffer is thus just duplicating this data on stderr
upon crash.

The log_buffer_size config parameter is left in the augeas
lens to prevent breakage for users on upgrade. It is however
completely ignored hereafter.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-03-18 14:29:22 +00:00
Daniel P. Berrange
2835c1e730 Add virLogSource variables to all source files
Any source file which calls the logging APIs now needs
to have a VIR_LOG_INIT("source.name") declaration at
the start of the file. This provides a static variable
of the virLogSource type.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-03-18 14:29:22 +00:00
Michal Privoznik
68f60f669c daemon: Introduce max_anonymous_clients
https://bugzilla.redhat.com/show_bug.cgi?id=992980

This config tunable allows users to determine the maximum number of
accepted but yet not authenticated users.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-03-17 17:45:13 +01:00
Nehal J Wani
2250a2b5d2 Add parameter to wait for lock in file locking APIs
Our current pidfile acquire APis (virPidFileAcquire) simply return -1 upon
failure to acquire a lock. This patch adds a parameter 'bool waitForLock'
which instructs the APIs if we want to make it block and wait for the lock
or not.
2014-03-17 10:04:47 -06:00
Jiri Denemark
e562e82f76 Load CPU map from builddir when run uninstalled
When libvirtd is run from a build directory without being installed, it
should not depend on files from a libvirt package installed in the
system. Not only because there may not be any libvirt installed at all.
We already do a good job for plugins but cpu_map.xml was still loaded
from the system.

The Makefile.am change is necessary to make this all work from VPATH
builds since libvirtd has no idea where to find libvirt sources. It only
knows the path from which it was started, i.e, a builddir.

https://bugzilla.redhat.com/show_bug.cgi?id=1074327
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2014-03-12 16:31:57 +01:00
Daniel P. Berrange
10ec072545 Add helper APIs to track if libvirtd or loadable modules have changed
The future QEMU capabilities cache needs to be able to invalidate
itself if the libvirtd binary or any loadable modules are changed
on disk. Record the 'ctime' value for these binaries and provide
helper APIs to query it. This approach assumes that if libvirt.so
is changed, then libvirtd will also change, which should usually
be the case with libtool's wrapper scripts that cause libvirtd to
get re-linked

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-03-11 10:51:49 +00:00
Eric Blake
c72e76c3d9 util: make it easier to grab only regular process exit
Right now, a caller waiting for a child process either requires
the child to have status 0, or must use WIFEXITED() and friends
itself.  But in many cases, we want the middle ground of treating
fatal signals as an error, and directly accessing the normal exit
value without having to use WEXITSTATUS(), in order to easily
detect an expected non-zero exit status.  This adds the middle
ground to the low-level virProcessWait; the next patch will add
it to virCommand.

* src/util/virprocess.h (virProcessWait): Alter signature.
* src/util/virprocess.c (virProcessWait): Add parameter.
(virProcessRunInMountNamespace): Adjust caller.
* src/util/vircommand.c (virCommandWait): Likewise.
* src/util/virfile.c (virFileAccessibleAs): Likewise.
* src/lxc/lxc_container.c (lxcContainerHasReboot)
(lxcContainerAvailable): Likewise.
* daemon/libvirtd.c (daemonForkIntoBackground): Likewise.
* tools/virt-login-shell.c (main): Likewise.
* tools/virsh-domain.c (cmdLxcEnterNamespace): Likewise.
* tests/testutils.c (virtTestCaptureProgramOutput): Likewise.
* tests/commandtest.c (test23): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-03-03 12:40:31 -07:00
Roman Bogorodskiy
0eb4a5f4f1 bhyve: add a basic driver
At this point it has a limited functionality and is highly
experimental. Supported domain operations are:

  * define
  * start
  * destroy
  * dumpxml
  * dominfo

It's only possible to have only one disk device and only one
network, which should be of type bridge.
2014-02-19 14:21:50 +00:00
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