This script will check output generated by virtestmock against a
white list. All non matching records found are printed out. So
far, the white list is rather sparse at the moment.
This test should be ran only after all other tests finished, and
should cleanup the temporary file before their execution. Because
I'm unable to reflect these requirements in Makefile.am
correctly, I've introduced new target 'check-access' under which
this test is available.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
All the accesses to files outside our build or source directories
are now identified and appended into a file for later processing.
The location of the file that contains all the records can be
controlled via VIR_TEST_FILE_ACCESS env variable and defaults to
abs_builddir "/test_file_access.txt".
The script that will process the access file is to be added in
next commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The intent is that this library is going to be called every time
to check if we are not touching anything outside srcdir or
builddir.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There is some magic going on when it comes to stat() or lstat().
Basically, stat() can either be a regular function, an inline
function that calls __xstat(_STAT_VER, ...) or a macro that does
the same as the inline func. Don't ask why is that, just read the
documentation in sys/stat.h and make sure you have a bucket next
to you. Anyway, currently there will not be both stat and __xstat
symbols at the same time, as one of them gets overwritten to the
other one during compilation. But this is not true anymore once
we start chaining our mocking libraries. Therefore we need a
wrapper that calls desired function from glibc.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Move some parts of virStorageFileRemoveLastPathComponent
into a separate function so they can be reused.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Our tests should use either VIRT_TEST_MAIN() or
VIRT_TEST_MAIN_PRELOAD() macros which create main() function and
call the passed callback subsequently. This is important because
the wrapper which calls the callback eventually does important
stuff like setting logging based on env variables and such.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In 7884d089d2 I've started to refactor qemu_monitor_json.c.
Thing is, it's current structure is nothing like the rest of our
code. The @ret variable is rewritten all the time, if()-s are
nested instead of using goto and so on.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Fron c3bd0019c0 on instead of creating the following path for
cgroups:
/sys/fs/cgroupX/$name.libvirt-$driver
we generate rather more verbose one:
/sys/fs/cgroupX/$driver-$id-$name.libvirt-$driver
where $name is optional and included iff contains allowed chars.
See original commit for more reasoning. Now, problem with the
original commit is that we are unable to start any LXC domain
after it. Because when starting LXC container, the CGroup layout
is created by our lxc_controller process and then detected and
validated by libvirtd. The validation is done by trying to match
detected layout against all the possible patterns for cgroup
paths that we've ever had. And the commit in question forgot to
update this part of the code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I've noticed this while trying to compile libvirt on my arm box.
CC rpc/libvirt_net_rpc_server_la-virnetserverclient.lo
rpc/virnetserverclient.c: In function 'virNetServerClientNewPostExecRestart':
rpc/virnetserverclient.c:516:45: error: cast increases required alignment of target type [-Werror=cast-align]
(long long *) ×tamp) < 0) {
^
cc1: all warnings being treated as errors
Problem is, @timestap is defined as time_t which is 32 bits long,
and we are typecasting it to long long which is 64bits long.
Solution is to make @timestamp type of long long. At the same
time, we can make @conn_time in _virNetServerClient struct long
long too. There is no need for it to be type of time_t.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In this function, @id is defined as unsigned long long. When
passing this variable to virJSONValueObjectGetNumberUlong(),
well address of this variable, it's typecasted to ull*. There
is no need for that. It's a same story with @nrequests_max.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In majority of our functions we have this variable @ret that is
overwritten a lot. In other areas of the code we use 'goto
cleanup;' just so that this wouldn't happen. But here.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In these functions I'm fixing here, we do call
qemuMonitorJSONCheckError() followed by another check if qemu
reply contains 'return' object. If it wouldn't, the former
CheckError() function would error out and the flow would not even
get to the latter.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Usually, the flow in this area of the code is as follows:
qemuMonitorJSONMakeCommand()
qemuMonitorJSONCommand()
qemuMonitorJSONCheckError()
parseReply()
But in this function, for some reasons, the last two steps were
swapped. This makes no sense.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1139766
Thing is, for some reasons you can have your domain's RTC to be
in something different than UTC. More weirdly, it's not only time
zone what you can shift it of, but an arbitrary value. So, if
domain is configured that way, libvirt will correctly put it onto
qemu cmd line and moreover track it as this offset changes during
domain's life time (e.g. because guest OS decides the best thing
to do is set new time to RTC). Anyway, they way in which this
tracking is implemented is events. But we've got a problem if
change in guest's RTC occurs and the daemon is not running. The
event is lost and we end up reporting invalid value in domain
XML. Therefore, when the daemon is starting up again and it is
reconnecting to all running domains, re-fetch their RTC so the
correct offset value can be computed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
These are wrappers over virStreamRecv and virStreamSend so that
users have to care about nothing but writing data into / reading
data from a sink (typically a file). Note, that these wrappers
are used exclusively on client side as the daemon has slightly
different approach. Anyway, the wrappers allocate this buffer and
use it for intermediate data storage until the data is passed to
stream to send, or to the client application. So far, we are
using 64KB buffer. This is enough, but suboptimal because server
can send messages up to VIR_NET_MESSAGE_LEGACY_PAYLOAD_MAX bytes
big (262120B, roughly 256KB). So if we make the buffer this big,
a single message containing the data is sent instead of four,
which is current situation. This means lower overhead, because
each message contains a header which needs to be processed, each
message is processed roughly same amount of time regardless of
its size, less bytes need to be sent through the wire, and so on.
Note that since server will never sent us a stream message bigger
than VIR_NET_MESSAGE_LEGACY_PAYLOAD_MAX there's no point in
sizing up the client buffer past this threshold.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There are two functions on the client that handle incoming stream
data. The first one virNetClientStreamQueuePacket() is a low
level function that just processes the incoming stream data from
the socket and stores it into an internal structure. This happens
in the client event loop therefore the shorter the callbacks are,
the better. The second function virNetClientStreamRecvPacket()
then handles copying data from internal structure into a client
provided buffer.
Change introduced in this commit makes just that: new queue for
incoming stream packets is introduced. Then instead of copying
data into intermediate internal buffer and then copying them into
user buffer, incoming stream messages are queue into the queue
and data is copied just once - in the upper layer function
virNetClientStreamRecvPacket(). In the end, there's just one
copying of data and therefore shorter event loop callback. This
should boost the performance which has proven to be the case in
my testing.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This reverts commit d9c9e138f2.
Unfortunately, things are going to be handled differently so this
commit must go.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Our distcheck is broken. Well, it works but only by pure chance.
When wireshark plugin is enabled, we try to query which path
should the plugin be installed into. Firstly, we try to ask
pkg-config as some releases of wireshark already sets
corresponding variable in their pkg-config files. However, if we
obtained no value from there we try to construct the path on our
own. Based on our observations it usually is:
$libdir/wireshark/plugins/$version/.
Now, the problem is in the way we are deciding whether we have
obtained the plugin directory from pkg-config or not. Simply
said, we are checking wrong variable. The variable we are
checking has never been set, thus in our test is empty and
therefore we will always construct the plugin dir path on our
own, regardless of its presence in the pkg-config file.
To make things worse, after fixing this problem, VPATH build was
broken as it now tried to install plugin into correct directory.
Yes, this is problem, because --prefix was not honoured and
everything but the plugin was installed into given prefix. I've
managed to resolve this issue by replacing plugin dir prefix with
our own. So when doing regular installation (our prefix ==
wireshark prefix), nothing changes. When doing VPATH build &
installation plugin is installed into correctly prefixed dir.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We do have something similar for installing init system files.
Basically I'm trying to avoid the following warning produced by
automake:
tools/Makefile.am:429: warning: uninstall-local was already defined in condition TRUE, which includes condition WITH_BSD_NSS ...
tools/Makefile.am:292: ... 'uninstall-local' previously defined here
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This target has been disabled historically for whatever reason.
Now that we do uninstall properly enable the test again.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function - in contrast with qemuBuildCommandLine - merely
constructs our internal command representation of a domain. This
is then later compared against expected output. Or, this function
is used also in virConnectDomainXMLToNative(). But due to a copy
paste error this function, just like its image - has @forceFips
argument that if enabled forces FIPS, otherwise mimics FIPS state
in the host. If FIPS is enabled or forced the generated command
line is different to state in which FIPS is disabled. Problem is,
while this could be desired in the virConnectDomainXMLToNative()
case, this is undesirable in the test suite as it will produce
unpredicted results.
Solution to this is to rename argument to @enableFips to
specifically tell whether we expect command line to be build in
either of fashions and make virConnectDomainXMLToNative()
implementation fetch FIPS state and pass it to
qemuProcessCreatePretendCmd().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Usually, we have this 'if() goto cleanup;' pattern in our new
code. It is going to be useful here too. Thing is, there was a
memleak. If there has been an error in
virNetServerProgramSendStreamError() or
virNetServerProgramSendStreamData() created message was never
freed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The stream serial number is the serial number of the RPC call
that initiated a data transfer. And as such can never be
negative. Moreover, when looking up internal state for a stream,
the serial numbers are compared. But hey, the serial number in
message header is unsigned too!
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Our uninstall script is not exact counterpart of install one.
Therefore we are leaving couple of files behind. This should not
happen.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While we could leave it behind as an indelible sign that libvirt
has been running on host, other users might not be that fond of
it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have this code in our Makefile that tries to remove
/etc/libvirt/nwfilter if directory is left empty after all our
example nwfilters were uninstalled. However, the check for that
is missing quotation marks thus rendering the test useless:
test -z allow-arp.xml allow-dhcp-server.xml .. qemu-announce-self.xml || \
rmdir "/some/path/libvirt.git/_install/etc/libvirt/nwfilter"
/bin/sh: line 0: test: too many arguments
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
On BSD we are creating this symlink to libnss_libvirt.so called
nss_libvirt.so. That's just the way it is on BSD. However, when
uninstalling, we try to remove libnss_libvirt.so instead of the
symlink. Moreover, if file we are trying to remove does not exist
we error out instead of ignoring the error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
These API already support VIR_DOMAIN_AFFECT_* flags. But the
documentation does not mention it. Eww.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We use _LAST items in enums to mark the last position in given
enum. Now, if and enum is passed to switch(), compiler checks
that all the values from enum occur in 'case' enumeration.
Including _LAST. But coverity spots it's a dead code. And it
really is. So to resolve this, we tend to put a comment just
above 'case ..._LAST' notifying coverity that we know this is a
dead code but we want to have it that way.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Do I really need to explain why?
Well, if read() is interrupted int the middle of reading, we will
never read the rest (even though it's highly unlikely as we are
reading just 8 bytes).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Even though we have the machine locked throughout whole APIs we
are querying/modifying domain internal state. We should grab a
job whilst doing that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Now that we have @flags we can support changing perf events just
in active or inactive configuration regardless of the other.
Previously, calling virDomainSetPerfEvents set events in both
active and inactive configuration at once. Even though we allow
users to set perf events that are to be enabled once domain is
started up. The virDomainGetPerfEvents API was flawed too. It
returned just runtime info.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Everywhere else we use a comma separated list. There's no good
reason to make 'perf' command an exception. Currently, it accepts
string list separated by '|'.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I've noticed that these APIs are missing @flags argument. Even
though we don't have a use for them, it's our policy that every
new API must have @flags.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While we have a wiki page describing the feature [1] since the
feature is distributed in our .tar.gz we ought to document it. So
I went ahead, copied the wiki page and reformatted so it fits our
docs coding style.
1: http://wiki.libvirt.org/page/NSS_module
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If the abs_builddir path already is in PATH and it's in the first
position, due to a bug in our code PATH would be cleared out.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In 68b726b93c we tried to fix a mem leak. However, it
wasn't done quite well. Problem is, virNetDaemonGetServers() may
fail in which case virObjectListFreeCount() would be called with
-1 objects to free. But the number of elements is taken in
unsigned rather than signed integer.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Coverity pointed out that getenv("PATH") may return NULL. Well,
we check for that in virFindFileInPath() too. If this happens, we
will pass NULL into strstr(). Ouch.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The variable is dereferenced prior its check for NULL. The check
itself does not make much sense anyway - it's our test, we know
we are not passing NULL.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The adminDispatchConnectListServers() function is generated by
our great perl script. However, it has a tiny flaw: if
adminConnectListServers() it calls fails, the control jumps onto
cleanup label where we try to free any list of servers built so
far. However, in the loop @i is unsigned (size_t) while @nresults
is signed (int). Currently, it does no harm because of the check
for @result being non-NULL. But if that ever changes in the
future, this bug will be hard to chase.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In an unlikely event of virConnectRegisterCloseCallback failing,
the error is ignored. This is an example file and we shouldn't
get a bad example.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Like in the rest of our code we tend to prefer 'goto' and
'cleanup' over 'if else' code structure. Do the same here.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
After 9c17d665fd the tap device for ethernet network type is
automatically precreated before spawning qemu. Problem is, the
qemuxml2argvtest wasn't updated and thus is failing. Because of
all the APIs that new code is calling, I had to mock a lot. Also,
since the tap FDs are labeled separately from the rest of the
devices/files I had to enable NOP security driver for the test
too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When constructing SCSI hostdev command line for qemu, the
/sys/bus/scsi/devices/... dir is scanned. Unfortunately, even in
the tests. This is needed to determine the name of SCSI device to
passthrough to qemu, because in the domain XML we were given its
address instead. Anyway, we should not be touching live system
data in our test suite as it produced unpredictable results. The
test is regressing from 1e9a083742 on.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Problem is that in the test any status file matching
tests/nssdata/*.status is loaded as it contains IP addresses that
are parsed. However, there's no order specified in which the
files are loaded. Therefore on different systems the order may be
different. This is then producing an unexpected results.
Instead of defining an order in which the files are loaded, make
the code that checks for missing IP addresses (or redundant ones)
cope with unordered list of addresses. The reasoning behind is
that the code doing the parsing is used in real NSS module where
we don't care for ordering.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The only purpose of this test is to catch possible linking
problems with libnss_libvirt.so.2.
One of the problems I faced was that the NSS plugin was unloaded
immediately after it got loaded and the name resolution process
continued with next configured option. Without any error. It was
very hard to debug why until I created this simple test and found
out immediately that there were some symbols missing. The reason
why problem was not caught in nsstest is that in the test we want
to use all the fancy stuff and therefore link it with libvirt.la.
So even if there's a symbol missing in the NSS plugin it will be
found in the libvirt.la.
But even after I resolved the issue we still need this test
because files the NSS plugin is built from are still live (mostly
those under utils/ dir). So as they change new symbol might be
required which would render the NSS plugin unusable.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function is a different beast compared to previous ones.
But yet again, nothing surprising is happening here.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The implementation is pretty straightforward. Moreover, because
of the nature of things, gethostbyname_r and gethostbyname2_r can
be implemented at the same time too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Name Service Switch is a glibc feature responsible for many
things. Translating domain names into IP addresses and vice versa
is just one of them. However, currently it's the only
functionality that this commit is tickling. Well, in this commit
the plugin skeleton is introduced. Implementation to come in next
patches.
Because of the future testing, where the implementation is to be
linked with a test, this needs to go into static library. Linking
a program with an .so statically is not portable. Therefore a
dummy libnss_libvirt_impl library is being introduced too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This is a missing counterpart for virSocketAddrSetIPv4Addr()
and is going to be needed later in the tests.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function is going to be used later in such context where the
argument makes no sense. Teach this function to cope with that
instead of the caller having to deal with passing some dummy
argument.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
These functions are going to be reused very shortly. So instead
of duplicating the code, lets move them into utils module.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Currently we spawn couple of binaries in our test suite.
Moreover, we provide some spoofed versions of system binaries
hoping that those will be executed instead of the system ones.
For instance, for testing SSH socket we have written our own ssh
binary for producing predictable results. We certainly don't want
to execute the system ssh binary.
However, in order to prefer our binaries over system ones, we
need to set PATH environment variable. But this is done only at
the Makefile level. So if anybody runs a test by hand that
expects our spoofed binary, the test ends up executing real
system binaries. This is not good. In fact, it's terribly wrong.
The fix lies in a small trick - putting our build directory at
the beginning of the PATH environment variable in each test.
Hopefully, since every test has this VIRT_TEST_MAIN* wrapper, we
can fix this at a single place.
Moreover, while this removes setting PATH for our tests written
in bash, it's safe as we are not calling anything ours that would
require PATH change there.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We include the file in plenty of places. This is mostly due to
historical reasons. The only place that needs something from the
header file is storage_backend_fs which opens _PATH_MOUNTED. But
it gets the file included indirectly via mntent.h. At no other
place in our code we need _PATH_.*. Drop the include and
configure check then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function can be called over a domain definition that has no
video configured. The
tests/qemuxml2argvdata/qemuxml2argv-minimal.xml file could serve
as an example. Problem is, before the check that domain has some
or none video configured, def->videos is dereferenced causing a
segmentation fault in case there's none video configured.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If the stars are in the right position and you're building with
VBox >= 4.2.0 it will happen that compiler thinks an array
allocated on the stack may be unbounded:
In file included from vbox/vbox_V4_2.c:13:0:
vbox/vbox_tmpl.c: In function '_virtualboxCreateMachine':
vbox/vbox_tmpl.c:2811:1: error: stack usage might be unbounded [-Werror=stack-usage=]
_virtualboxCreateMachine(vboxGlobalData *data, virDomainDefPtr def, IMachine **machine, char *uuidstr ATTRIBUTE_UNUSED)
^
Well, given how the variable is declared, I had some hard time
seeing it is actually bounded. Surprisingly compiler does not
complain because of -Wframe-larger-than. This is because
variable length arrays do not count into that warning.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This is an error message I've just seen. Fix it by initializing
@inode.
CC lxc/libvirt_driver_lxc_impl_la-lxc_process.lo
lxc/lxc_process.c: In function 'virLXCProcessMonitorInitNotify':
lxc/lxc_process.c:767:23: error: 'inode' may be used uninitialized in this function [-Werror=maybe-uninitialized]
virDomainAuditInit(vm, initpid, inode);
^
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While trying to build with -Os couple of compile errors showed
up.
conf/domain_conf.c: In function 'virDomainChrRemove':
conf/domain_conf.c:13666:24: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
virDomainChrDefPtr ret, **arrPtr = NULL;
^
Compiler fails to see that @ret is used only if set in the loop,
but whatever, there's no harm in initializing the variable.
In vboxAttachDrivesNew and _vboxAttachDrivesOld compiler thinks
that @rc may be used uninitialized. Well, not directly, but maybe
after some optimization. Yet again, no harm in initializing a
variable.
In file included from ./util/virthread.h:26:0,
from ./datatypes.h:28,
from vbox/vbox_tmpl.c:43,
from vbox/vbox_V3_1.c:37:
vbox/vbox_tmpl.c: In function '_vboxAttachDrivesOld':
./util/virerror.h:181:5: error: 'rc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
^
In file included from vbox/vbox_V3_1.c:37:0:
vbox/vbox_tmpl.c:1041:14: note: 'rc' was declared here
nsresult rc;
^
Yet again, one uninitialized variable:
qemu/qemu_driver.c: In function 'qemuDomainBlockCommit':
qemu/qemu_driver.c:17194:9: error: 'baseSource' may be used uninitialized in this function [-Werror=maybe-uninitialized]
qemuDomainPrepareDiskChainElement(driver, vm, baseSource,
^
And another one:
storage/storage_backend_logical.c: In function 'virStorageBackendLogicalMatchPoolSource.isra.2':
storage/storage_backend_logical.c:618:33: error: 'thisSource' may be used uninitialized in this function [-Werror=maybe-uninitialized]
thisSource->devices[j].path))
^
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While trying to build with -Os I've encountered some build
failures.
util/vircommand.c: In function 'virCommandAddEnvFormat':
util/vircommand.c:1257:1: error: inlining failed in call to 'virCommandAddEnv': call is unlikely and code size would grow [-Werror=inline]
virCommandAddEnv(virCommandPtr cmd, char *env)
^
util/vircommand.c:1308:5: error: called from here [-Werror=inline]
virCommandAddEnv(cmd, env);
^
This function is big enough for the compiler to be not inlined.
This is the error message I'm seeing:
Then virDomainNumatuneNodeSpecified is exported and called from
other places. It shouldn't be inlined then.
In file included from network/bridge_driver_platform.h:30:0,
from network/bridge_driver_platform.c:26:
network/bridge_driver_linux.c: In function 'networkRemoveRoutingFirewallRules':
./conf/network_conf.h:350:1: error: inlining failed in call to 'virNetworkDefForwardIf.constprop': call is unlikely and code size would grow [-Werror=inline]
virNetworkDefForwardIf(const virNetworkDef *def, size_t n)
^
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Older compilers fail to see that 'close' is not used a function
rather than a variable and produce the following error:
cc1: warnings being treated as errors
../../src/datatypes.c: In function 'virConnectCloseCallbackDataReset':
../../src/datatypes.c:149: error: declaration of 'close' shadows a global declaration [-Wshadow]
Replace all the 'close' occurrences with 'closeData' to resolve
this.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There's been a report on the upstream list [1] describing we
access /sys/devices/system/cpu/present directly on the host from
within our test suite. This may end up in unpredictable results
as no all linux systems are required to have that file. Mock
access to the file.
libvirt.git/tests $ ../run strace vircgrouptest
...
access("/sys/devices/system/cpu/present", F_OK) = 0
...
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There's this check when building command line that whenever
domain has no graphics card configured we put -nographics onto
qemu command line. The check is 'if (!def->graphics)'. This
makes coverity think that def->graphics can be NULL, which is
true. But later in the code every access to def->graphics is
guarded by check for def->ngraphics, so no crash occurs. But this
is something that coverity fails to deduct.
In order to shut coverity up lets change the condition to
'if (!def->ngraphics)'.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
After 6604a3dd9f in which new helper function has been
introduced, the code calls virStringReplace and dereference the
result immediately. The string function can, however, return NULL
so this would SIGSEGV right away. Check for the return value of
the string function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
After 457ff97fa there are two defects in our code. In both of
them we use a signed variable to hold up a number of snapshots
that domain has. We use a helper function to count the number.
However, the helper function may fail in which case it returns
a negative one and control jumps to cleanup label where an
unsigned variable is used to iterate over array of snapshots. The
loop condition thus compare signed and unsigned variables which
in this specific case ends up badly for us.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Imagine you have partially installed libvirt, or maybe you're
just running 'make uninstall' from a different version than 'make
install' has been ran. One way or another, we are doing plain
'rm' instead of 'rm -f' and thus not trying hard enough when
uninstalling. In the rest of our code we stick with -f switch. Do
that for docs too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Since we have the macro there's no need for us to unwind it by
hand and check for mutually exclusive flags ourselves.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have macros that check and reject mutually exclusive
parameters to our commands. Use those instead of if-else tree.
At the same time, the variable @current becomes useless therefore
it is dropped.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There's a check if a domain definition has any graphics card and
if so, we iterate over each one of them. This makes no sense,
because even if it has none we can still iterate over.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When getting a list of servers registered for a daemon, it's
returned as a dynamically allocated array filled in with pointers
to constant strings. Because the array is dynamic, it should be
freed when no longer needed (but not the strings!). Even the
function that creates the array suggests that.
==19446== 48 bytes in 3 blocks are definitely lost in loss record 821 of 1,034
==19446== at 0x4C2C28E: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==19446== by 0x54BAFC8: virReallocN (viralloc.c:245)
==19446== by 0x54BB0BE: virExpandN (viralloc.c:294)
==19446== by 0x54BB391: virInsertElementsN (viralloc.c:436)
==19446== by 0x164E3D: virNetDaemonGetServerNames (virnetdaemon.c:217)
==19446== by 0x15616F: adminDaemonListServers (admin_server.c:52)
==19446== by 0x155B8C: adminDispatchConnectListServers (admin.c:151)
==19446== by 0x155FD8: adminDispatchConnectListServersHelper (admin_dispatch.h:101)
==19446== by 0x568E862: virNetServerProgramDispatchCall (virnetserverprogram.c:437)
==19446== by 0x568E3C3: virNetServerProgramDispatch (virnetserverprogram.c:307)
==19446== by 0x5687B5B: virNetServerProcessMsg (virnetserver.c:135)
==19446== by 0x5687C1B: virNetServerHandleJob (virnetserver.c:156)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In cf113e8d we changed the declaration of
virCgroupAllowDevicePath() and virCgroupDenyDevicePath().
However, while updating the stub for non-cgroup platforms for the
former we forgot to update the latter too causing a build
failure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It is highly unlikely that a backend will know how to create a
volume from a different volume (buildVolFrom) and not know how to
create an empty volume (createVol). But:
1) we call the function without any prior check so if that's the
case we would SIGSEGV immediatelly
2) it's better to be safe than sorry.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Firstly, we realloc internal list to hold new item (=volume that
will be potentially created) and then we check whether we
actually know how to create it. If we don't we consume more
memory than we really need for no good reason.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have the same argument to many other commands that produce an
XML based on what user typed. But unfortunately vol-create-as
was missing it. Maybe nobody had needed it yet. Well, I did
just now.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The way we usually write functions is that we start the work and
if something goes bad we goto cleanup and roll back there. Or
just free resources that are no longer needed. Do the same here.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
After the rework of mocking of our tests there's the
virportallocator test failing to link on mingw. Well, it's the
mocking library actually:
../gnulib/lib/.libs/libgnu.a(bind.o): In function `rpl_bind':
/home/jenkins/libvirt-mingw/build32/gnulib/lib/../../../gnulib/lib/bind.c:33: multiple definition of `rpl_bind'
.libs/virportallocatormock_la-virportallocatormock.o:/home/jenkins/libvirt-mingw/build32/tests/../../tests/virportallocatormock.c:79: first defined here
I've no idea why this matters to mingw and does not to others.
Nevertheless, if we make the test linux only the problem goes
away.
Apparently, our test for RTLD_NEXT is not sufficient because
mingw32 defines it. Lets put aside for a while fact that it has
the same value as RTLD_DEFAULT which by description has different
meaning, shall we?
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Apparently we are not the only ones with dumb free functions
because dbus_message_unref() does not accept NULL either. But if
I were to vote, this one is even more evil. Instead of returning
an error just like we do it immediately dereference any pointer
passed and thus crash you app. Well done DBus!
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f878ebda700 (LWP 31264)]
0x00007f87be4016e5 in ?? () from /usr/lib64/libdbus-1.so.3
(gdb) bt
#0 0x00007f87be4016e5 in ?? () from /usr/lib64/libdbus-1.so.3
#1 0x00007f87be3f004e in dbus_message_unref () from /usr/lib64/libdbus-1.so.3
#2 0x00007f87bf6ecf95 in virSystemdGetMachineNameByPID (pid=9849) at util/virsystemd.c:228
#3 0x00007f879761bd4d in qemuConnectCgroup (driver=0x7f87600a32a0, vm=0x7f87600c7550) at qemu/qemu_cgroup.c:909
#4 0x00007f87976386b7 in qemuProcessReconnect (opaque=0x7f87600db840) at qemu/qemu_process.c:3386
#5 0x00007f87bf6edfff in virThreadHelper (data=0x7f87600d5580) at util/virthread.c:206
#6 0x00007f87bb602334 in start_thread (arg=0x7f878ebda700) at pthread_create.c:333
#7 0x00007f87bb3481bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb) frame 2
#2 0x00007f87bf6ecf95 in virSystemdGetMachineNameByPID (pid=9849) at util/virsystemd.c:228
228 dbus_message_unref(reply);
(gdb) p reply
$1 = (DBusMessage *) 0x0
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1293351
Since we already have virtio channel events, we know when guest
agent within guest has (dis-)connected. Instead of us blindly
connecting to a socket that no one is listening to, we can just
follow what qemu-ga does. This has a nice benefit that we don't
need to 'guest-ping' the agent just to timeout and find out
nobody is listening.
The way that this commit is implemented:
- don't connect in qemuProcessLaunch directly, defer that to event
callback (which already follows the agent) -
processSerialChangedEvent
- after migration is settled, before we resume vCPUs, ask qemu
whether somebody is listening on the socket and if so, connect
to it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The function, like others in our code, returns zero on success
and a negative value on error. However, there are two places in
xenconfig source code where we check for non-zero value. While
the function can't currently return a positive value, those
checks look okay, but does not really follow our style.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The virStringListLength function does not ever modify the passed
string list. It merely counts the items in it. Make sure that we
reflect this bit in the function header.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
(crobinso: fix up spacing and squash in sheepdog bit suggested
by Andrea)
Older gcc fails to see that the variable is set iff @hasPriority
== true in which case the former is set a value. Initialize the
value while declaring it to make the compiler shut up.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In the commit 7938b533 we've changed the function signature,
however forgot to update stump that's used on systems without
CGroups causing a build failure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
After 1036ddadb2 we use bhyveDriverGetCapabilities from other
sources too, not only from bhyve_driver.c. However, the function
was static so not properly expose to other files. In order to
expose it, we need to move couple of #include-s too.
Then, there has been a copy paste error in
virBhyveProcessReconnect: s/privconn/data->driver/.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I've noticed that variable @reply is not initialized and if
something at the beginning of the function fails, e.g.
virDBusGetSystemBus(), the control jump straight to cleanup label
where dbus_message_unref() is then called over this uninitialized
variable.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I've noticed couple of warning in dmesg while debugging
something:
[ 9683.973754] HTB: quantum of class 10001 is big. Consider r2q change.
[ 9683.976460] HTB: quantum of class 10002 is big. Consider r2q change.
I've read the HTB documentation and linux kernel code to find out
what's wrong. Basically we need to pass another argument
"quantum" to our tc cmd line because the default computed by HTB
does not always work in which case the warning message is printed
out.
You can read more details here:
http://luxik.cdi.cz/~devik/qos/htb/manual/userg.htm#sharing
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In my previous commit a70f3b1c77 I've tried to fix case
when building from VPATH and a file wasn't being installed.
However, my fix broke non-VPATH build.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Michal Privoznik