Previous commit
commit 7ada155cdf
Author: Gao feng <gaofeng@cn.fujitsu.com>
Date: Wed Sep 11 11:15:02 2013 +0800
DBus: introduce virDBusIsServiceEnabled
Made the cgroups code fallback to non-systemd based setup
when dbus is not running. It was too big a hammer though,
as it did not check what error code was received when the
dbus connection failed. Thus it silently ignored serious
errors from dbus such as "too many client connections",
which should always be treated as fatal.
We only want to ignore errors if the dbus unix socket does
not exist, or if nothing is listening on it.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The LXC code would read the log file if an LXC guest failed to
startup. There were a number of failure cases where the guest
will not start and libvirtd never gets as far as looking at the
log file.
Fix this by replacing some earlier generic errors with messages
from the log.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The LXC controller main() method initialized 'rc' to 1
rather than '-1'. In the cleanup path it will print any
error to stderr, if-and-only-if rc < 0. Hence the incorrect
initialization caused errors to be lost.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The log message regex has been
[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{3}\+[0-9]{4}: [0-9]+: debug|info|warning|error :
The precedence of '|' is high though, so this is equivalent to matching
[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{3}\+[0-9]{4}: [0-9]+: debug
Or
info
Or
warning
Or
error :
Which is clearly not what it should have done. This caused the code to
skip over things which are not log messages. The solution is to simply
add brackets.
A test case is also added to validate correctness.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The LXC controller uses dbus to talk to systemd to create
cgroups. This means that each LXC controller instance has
a dbus connection. The DBus daemon is limited to 256
connections by default and we want to be able to run many
1000 of containers.
While the dbus limit could be raised in the config files,
it is simpler to make libvirt LXC controller close its
dbus connection once everything is configured.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The dbus_bus_get() function returns a shared bus connection that
all libraries in a process can use. You are forbidden from calling
close on this connection though, since you can never know if any
other code might be using it.
Add an option to use private dbus bus connections, if the app
wants to be able to close the connection.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Since 5a468b38b6 we use SOL_LOCAL for the 2nd argument of getsockopt()
however Lion added the define SOL_LOCAL set to 0, which is the value to
the 2nd argument of getsockopt() for Unix sockets on Mac OS X. So
instead of using the define just pass 0 so we restore compatibility
with Snow Leopard and Leopard.
Reported at https://github.com/mxcl/homebrew/pull/23141
Rather than walking the possible driver backends by handle, use a helper
function. Additionally I've done a bit of refactoring in the code over
the past few commits so add myself to the copyright line.
After my patches, some functions gained one more argument
(@listenAddress) which wasn't included in debug printing of
arguments they were called with. Functions in question are:
qemuMigrationPrepareDirect and qemuMigrationPerform.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I've noticed a SIGSEGV-ing libvirtd on the destination when the qemu
died too quickly = in Prepare phase. What is happening here is:
1) [Thread 3493] We are in qemuMigrationPrepareAny() and calling
qemuProcessStart() which subsequently calls qemuProcessWaitForMonitor()
and qemuConnectMonitor(). So far so good. The qemuMonitorOpen()
succeeds, however switching monitor to QMP mode fails as qemu died
meanwhile. That is qemuMonitorSetCapabilities() returns -1.
2013-10-08 15:54:10.629+0000: 3493: debug : qemuMonitorSetCapabilities:1356 : mon=0x14a53da0
2013-10-08 15:54:10.630+0000: 3493: debug : qemuMonitorJSONCommandWithFd:262 : Send command '{"execute":"qmp_capabilities","id":"libvirt-1"}' for write with FD -1
2013-10-08 15:54:10.630+0000: 3493: debug : virEventPollUpdateHandle:147 : EVENT_POLL_UPDATE_HANDLE: watch=17 events=13
...
2013-10-08 15:54:10.631+0000: 3493: debug : qemuMonitorSend:956 : QEMU_MONITOR_SEND_MSG: mon=0x14a53da0 msg={"execute":"qmp_capabilities","id":"libvirt-1"}
fd=-1
2013-10-08 15:54:10.631+0000: 3262: debug : virEventPollRunOnce:641 : Poll got 1 event(s)
2) [Thread 3262] The event loop is trying to do the talking to monitor.
However, qemu is dead already, remember?
2013-10-08 15:54:13.436+0000: 3262: error : qemuMonitorIORead:551 : Unable to read from monitor: Connection reset by peer
2013-10-08 15:54:13.516+0000: 3262: debug : virFileClose:90 : Closed fd 25
...
2013-10-08 15:54:13.533+0000: 3493: debug : qemuMonitorSend:968 : Send command resulted in error internal error: early end of file from monitor: possible problem:
3) [Thread 3493] qemuProcessStart() failed. No big deal. Go to the
'endjob' label and subsequently to the 'cleanup'. Since the domain is
not persistent and ret is -1, the qemuDomainRemoveInactive() is called.
This has an (unpleasant) effect of virObjectUnref()-in the @vm object.
Unpleasant because the event loop which is about to trigger EOF callback
still holds a pointer to the @vm (not the reference). See the valgrind
output below.
4) [Thread 3262] So the event loop starts triggering EOF:
2013-10-08 15:54:13.542+0000: 3262: debug : qemuMonitorIO:729 : Triggering EOF callback
2013-10-08 15:54:13.543+0000: 3262: debug : qemuProcessHandleMonitorEOF:294 : Received EOF on 0x14549110 'migt10'
And the monitor is cleaned up. This results in calling
qemuProcessHandleMonitorEOF with the @vm pointer passed. The pointer is
kept in qemuMonitor struct.
==3262== Thread 1:
==3262== Invalid read of size 4
==3262== at 0x77ECCAA: pthread_mutex_lock (in /lib64/libpthread-2.15.so)
==3262== by 0x52FAA06: virMutexLock (virthreadpthread.c:85)
==3262== by 0x52E3891: virObjectLock (virobject.c:320)
==3262== by 0x11626743: qemuProcessHandleMonitorEOF (qemu_process.c:296)
==3262== by 0x11642593: qemuMonitorIO (qemu_monitor.c:730)
==3262== by 0x52BD526: virEventPollDispatchHandles (vireventpoll.c:501)
==3262== by 0x52BDD49: virEventPollRunOnce (vireventpoll.c:648)
==3262== by 0x52BBC68: virEventRunDefaultImpl (virevent.c:274)
==3262== by 0x542D3D9: virNetServerRun (virnetserver.c:1112)
==3262== by 0x11F368: main (libvirtd.c:1513)
==3262== Address 0x14549128 is 24 bytes inside a block of size 136 free'd
==3262== at 0x4C2AF5C: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==3262== by 0x529B1FF: virFree (viralloc.c:580)
==3262== by 0x52E3703: virObjectUnref (virobject.c:270)
==3262== by 0x531557E: virDomainObjListRemove (domain_conf.c:2355)
==3262== by 0x1160E899: qemuDomainRemoveInactive (qemu_domain.c:2061)
==3262== by 0x1163A0C6: qemuMigrationPrepareAny (qemu_migration.c:2450)
==3262== by 0x1163A923: qemuMigrationPrepareDirect (qemu_migration.c:2626)
==3262== by 0x11682D71: qemuDomainMigratePrepare3Params (qemu_driver.c:10309)
==3262== by 0x53B0976: virDomainMigratePrepare3Params (libvirt.c:7266)
==3262== by 0x1502D3: remoteDispatchDomainMigratePrepare3Params (remote.c:4797)
==3262== by 0x12DECA: remoteDispatchDomainMigratePrepare3ParamsHelper (remote_dispatch.h:5741)
==3262== by 0x54322EB: virNetServerProgramDispatchCall (virnetserverprogram.c:435)
The mon->vm is set in qemuMonitorOpenInternal() which is the correct
place to increase @vm ref counter. The correct place to decrease the ref
counter is then qemuMonitorDispose().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The helper function virCompareLimitUlong compares limit values,
where value of 0 is equal to unlimited. If the latter parameter is 0,
it should return -1 instead of 1, hence the user can only set hard_limit when
swap_hard_limit currently is unlimited.
Worse, all callers pass 2 64-bit values, but on 32-bit platforms,
the second argument was silently truncated to 32 bits, which
could lead to incorrect computations.
Signed-off-by: Bing Bu Cao <mars@linux.vnet.ibm.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The enum for virNetDevVPort is declared in the header file
virnetdevvportprofile.h, but for some reason the impl is
in netdev_vport_profile_conf.c.
This causes a dep from src/util onto src/conf which is not
allowed. Move the enum impl into virnetdevvportprofile.c
to break the circle.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This configuration knob is there to override default listen address for
-incoming for all qemu domains.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function takes exactly one argument: an address to check.
It returns true, if the address is an IPv4 or IPv6 address in numeric
format, false otherwise (e.g. for "examplehost").
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=994364
Whenever we check for ABI stability, we have new xml (e.g. provided by
user, or obtained from snapshot, whatever) which we compare to old xml
and see if ABI won't break. However, if the new xml was produced via
virDomainGetXMLDesc(..., VIR_DOMAIN_XML_MIGRATABLE) it lacks some
devices, e.g. 'pci-root' controller. Hence, the ABI stability check
fails even though it is stable. Moreover, we can't simply fix
virDomainDefCheckABIStability because removing the correct devices is
task for the driver. For instance, qemu driver wants to remove the usb
controller too, while LXC driver doesn't. That's why we need special
qemu wrapper over virDomainDefCheckABIStability which removes the
correct devices from domain XML, produces MIGRATABLE xml and calls the
check ABI stability function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit id '532fef36' added a call to fallocate() and some error
handling based on whether or not the function existed. This new
call resulted in libvirt-cim/cimtest failures when attempting to
create a volume with "0" (zero) allocation value. The failure is
logged as:
Oct 9 07:51:33 localhost libvirtd[8030]: cannot allocate 0 bytes in
file '/var/lib/libvirt/images/cimtest-vol.img': Invalid argument
This can also be seen with virsh vol-create-as:
error: Failed to create vol test
error: cannot allocate 0 bytes in file '/home/vm-images/test': Invalid
argument
error: Failed to create vol test
error: cannot allocate 0 bytes in file '/home/vm-images/test': Invalid
argument
It turns out fallocate() will return EINVAL when the incoming 'len'
(or allocation) value is 0 (or less).
At the beginning of the function qemuPrepareHostdevPCICheckSupport() is
called. After that @pcidevs is initialized. However, if the very first
command fails, we go to 'cleanup' label where virObjectUnref(pcidevs) is
called. Obviously, it is called before @pcidevs was able to get
initialized. Compiler warns about it:
CC qemu/libvirt_driver_qemu_impl_la-qemu_hostdev.lo
qemu/qemu_hostdev.c: In function 'qemuPrepareHostdevPCIDevices':
qemu/qemu_hostdev.c:824:19: error: 'pcidevs' may be used uninitialized in this function [-Werror=maybe-uninitialized]
virObjectUnref(pcidevs);
^
cc1: all warnings being treated as errors
Prefer using VFIO (if available) to the legacy KVM device passthrough.
With this patch a PCI passthrough device without the driver configured
will be started with VFIO if it's available on the host. If not legacy
KVM passthrough is checked and error is reported if it's not available.
Add code to check availability of PCI passhthrough using VFIO and the
legacy KVM passthrough and use it when starting VMs and hotplugging
devices to live machine.
Since 76b644c when the support for RAM filesystems was introduced,
libvirt accepted the following XML:
<source usage='1024' unit='KiB'/>
This was parsed correctly and internally stored in bytes, but it
was formatted as (with an extra 's'):
<source usage='1024' units='KiB'/>
When read again, this was treated as if the units were missing,
meaning libvirt was unable to parse its own XML correctly.
The usage attribute was documented as being in KiB, but it was not
scaled if the unit was missing. Transient domains still worked,
because this was balanced by an extra 'k' in the mount options.
This patch:
Changes the parser to use 'units' instead of 'unit', as the latter
was never documented (fixing persistent domains) and some programs
(libvirt-glib, libvirt-sandbox) already parse the 'units' attribute.
Removes the extra 'k' from the tmpfs mount options, which is needed
because now we parse our own XML correctly.
Changes the default input unit to KiB to match documentation, fixing:
https://bugzilla.redhat.com/show_bug.cgi?id=1015689
Commit 2d74822a9e renamed
"freebsdNodeGetCPUCount" to "appleFreebsdNodeGetCPUCount", leaving one
call to "freebsdNodeGetCPUCount". Fix this other case.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
We currently have other error codes in singular form, e.g.
VIR_ERR_NETWORK_EXIST. Cleanup the previous patch to match the form.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I created a storage volume(eg: test) from a storage pool(eg:vg10) using
the following command:"virsh vol-create-as --pool vg10 --name test --capacity 300M."
When I re-executed the above command, the output was as the following:
"error: Failed to create vol test
error: Storage volume not found: storage vol 'test' already exists"
I think the output "Storage volume not found" is not appropriate. Because in fact storage
vol test has been found at this time. And then I think virErrorNumber should includes
VIR_ERR_STORAGE_EXIST which can also be used elsewhere. So I make this patch. The result
is as following:
"error: Failed to create vol test
error: storage volume 'test' exists already"
The virConnectPtr is passed around loads of nwfilter code in
order to provide it as a parameter to the callback registered
by the virt drivers. None of the virt drivers use this param
though, so it serves no purpose.
Avoiding the need to pass a virConnectPtr means that the
nwfilterStateReload method no longer needs to open a bogus
QEMU driver connection. This addresses a race condition that
can lead to a crash on startup.
The nwfilter driver starts before the QEMU driver and registers
some callbacks with DBus to detect firewalld reload. If the
firewalld reload happens while the QEMU driver is still starting
up though, the nwfilterStateReload method will open a connection
to the partially initialized QEMU driver and cause a crash.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The nwfilter driver only needs a reference to its private
state object, not a full virConnectPtr. Update the domUpdateCBStruct
struct to have a 'void *opaque' field instead of a virConnectPtr.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Commit 27e81517a8 set the payload size to 256 KB, which is
actually the max packet size, including the size of the header.
Reduce this by VIR_NET_MESSAGE_HEADER_MAX (24) and set
VIR_NET_MESSAGE_LEGACY_PAYLOAD_MAX to 262120, which was the original
value before increasing the limit in commit eb635de1fe.
This fixes the following error:
error : nodeGetInfo:933 : this function is not supported
by the connection driver: node info not implemented on this platform
The freebsdNodeGetCPUCount was renamed to appleFreebsdNodeGetCPUCount
in order to make more visible the fact, that it works on Mac OS X too.
Mac OS X can use sysctlbyname as same as FreeBSD to get the CPU
frequency. However, the MIB style name is different from FreeBSD's.
And the unit of the return frequency is also different.
Signed-off-by: Ryota Ozaki <ozaki.ryota@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This fixes the following error:
error : virGetUserEnt:703 : Failed to find user record for uid '32654'
'32654' (it's random and varies) comes from getsockopt with
LOCAL_PEERCRED option. getsockopt returns w/o error but seems
to not set any value to the buffer for uid.
For Mac OS X, LOCAL_PEERCRED has to be used with SOL_LOCAL level.
With SOL_LOCAL, getsockopt returns a correct uid.
Note that SOL_LOCAL can be found in
/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/un.h.
Signed-off-by: Ryota Ozaki <ozaki.ryota@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
On RHEL 5, compilation fails with:
storage/storage_backend.c: In function 'createRawFile':
storage/storage_backend.c:339: warning: implicit declaration of function 'fallocate'
storage/storage_backend.c:339: warning: nested extern declaration of 'fallocate' [-Wnested-externs]
But:
$ grep HAVE_FALLOCATE config.h
/* #undef HAVE_FALLOCATE */
Huh? It turns out that in kernels that old, fallocate() is not
implemented (config.h is correct), but <linux/fs.h> defines
HAVE_FALLOCATE as an empty witness macro for a completely
different purpose. Since storage_backend.c is including
<linux/fs.h> on RHEL 5, we are hosed by the kernel definition.
Newer kernels no longer pollute the namespace, and it's fairly
easy to convert to an expression that works with both the old
kernel witness and the new-style config.h (undefined or 1).
Problem introduced in commit 532fef3.
* src/storage/storage_backend.c (createRawFile): Avoid namespace
pollution from kernel, by checking HAVE_FALLOCATE for a value.
Signed-off-by: Eric Blake <eblake@redhat.com>
I tried to test ./configure --without-lxc --without-remote.
First, the build failed with some odd errors, such as an
inability to build xen, or link failures for virNetTLSInit.
But when you think about it, once there is no remote code,
all of libvirtd is useless, any stateful driver that depends
on libvirtd is also not worth compiling, and any libraries
used only by RPC code are not needed. So I patched
configure.ac to make for some saner defaults when an
explicit disable is attempted. Similarly, since we have
migrated virnetdevbridge into generic code, the workaround
for Linux kernel stupidity must not depend on stateful
drivers being in use.
Then there's 'make check' that needs segregation.
Wow - quite a bit of cleanup to make --without-remote useful :)
* configure.ac: Let --without-remote toggle defaults on stateful
drivers and other libraries. Pick up Linux kernel workarounds
even when qemu and lxc are not being compiled.
* tests/Makefile.am (test_programs): Factor out programs that
require remote.
* src/libvirt_private.syms (rpc/virnet*.h): Move...
* src/libvirt_remote.syms: ...into new file.
* src/Makefile.am (SYM_FILES): Ship new syms file.
Signed-off-by: Eric Blake <eblake@redhat.com>
Fixed the safezero call for allocating the rest of the file after cloning
an existing volume; it used to always use a zero offset, causing it to
only allocate the beginning of the file.
Also modified file creation to try to use fallocate(2) to pre-allocate
disk space before copying any data to make sure it fails early on if disk
is full and makes sure we can skip zero blocks when copying file contents.
If fallocate isn't available we will zero out the rest of the file after
cloning and only use sparse cloning if client requested a lower allocation
than the input volume's capacity.
Signed-off-by: Oskari Saarenmaa <os@ohmu.fi>
My previous commit 7dc1d4ab was supposed to change safezero to allocate
1 megabyte at maximum, but had the logic reversed and will allocate 1
megabyte at minimum (and a lot more at maximum.)
Signed-off-by: Oskari Saarenmaa <os@ohmu.fi>
mmap can fail on 32-bit systems if we're trying to zero out a lot of data.
Fall back to using block-by-block writing in that case. While we could map
smaller blocks it's unlikely that this code is used a lot and its easier to
just fall back to one of the existing methods.
Also modified the block-by-block zeroing to not allocate a megabyte of
zeroes if we're writing less than that.
Signed-off-by: Oskari Saarenmaa <os@ohmu.fi>
Again stolen from qemu_driver.c, but dropping all the unneeded bits.
This aims to copy all the current qemu validation checks since that's
the most commonly used real driver, but some of the checks are
completely artificial in the test driver.
This only supports creation of internal snapshots for initial
simplicity.
This resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=1012824https://bugzilla.redhat.com/show_bug.cgi?id=1012834
Note that a similar problem was reported in:
https://bugzilla.redhat.com/show_bug.cgi?id=827519
but the fix only worked for <interface type='hostdev'>, *not* for
<interface type='network'> where the network itself was a pool of
hostdevs.
The symptom in both cases was this error message:
internal error: Unable to determine device index for network device
In both cases the cause was lack of proper handling for netdevs
(<interface>) of type='hostdev' when scanning the netdev list looking
for alias names in qemuAssignDeviceNetAlias() - those that aren't
type='hostdev' have an alias of the form "net%d", while those that are
hostdev use "hostdev%d". This special handling was completely lacking
prior to the fix for Bug 827519 which was:
When searching for the highest alias index, libvirt looks at the alias
for each netdev and if it is type='hostdev' it ignores the entry. If
the type is not hostdev, then it expects the "net%d" form; if it
doesn't find that, it fails and logs the above error message.
That fix works except in the case of <interface type='network'> where
the network uses hostdev (i.e. the network is a pool of VFs to be
assigned to the guests via PCI passthrough). In this case, the check
for type='hostdev' would fail because it was done as:
def->net[i]->type == VIR_DOMAIN_NET_TYPE_HOSTDEV
(which compares what was written in the config) when it actually
should have been:
virDomainNetGetActualType(def->net[i]) == VIR_DOMAIN_NET_TYPE_HOSTDEV
(which compares the type of netdev that was actually allocated from
the network at runtime).
Of course the latter wouldn't be of any use if the netdevs of
type='network' hadn't already acquired their actual network connection
yet, but manual examination of the code showed that this is never the
case.
While looking through qemu_command.c, two other places were found to
directly compare the net[i]->type field rather than getting actualType:
* qemuAssignDeviceAliases() - in this case, the incorrect comparison
would cause us to create a "net%d" alias for a netdev with
type='network' but actualType='hostdev'. This alias would be
subsequently overwritten by the proper "hostdev%d" form, so
everything would operate properly, but a string would be
leaked. This patch also fixes this problem.
* qemuAssignDevicePCISlots() - would defer assigning a PCI address to
a netdev if it was type='hostdev', but not for type='network +
actualType='hostdev'. In this case, the actual device usually hasn't
been acquired yet anyway, and even in the case that it has, there is
no practical difference between assigning a PCI address while
traversing the netdev list or while traversing the hostdev
list. Because changing it would be an effective NOP (but potentially
cause some unexpected regression), this usage was left unchanged.
The XML parser reserves 'vnet' as a prefix for automatically
generated NIC device names. Switch the veth device creation
to use this prefix, so it does not have to worry about clashes
with user specified names in the XML.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The veth device creation code run in two steps, first it looks
for two free veth device names, then it runs ip link to create
the veth pair. There is an obvious race between finding free
names and creating them, when guests are started in parallel.
Rewrite the code to loop and re-try creation if it fails, to
deal with the race condition.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If veth device allocation has a fatal error, the veths
array may contain NULL device names. Avoid calling the
virNetDevVethDelete function on such names.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The kernel automatically destroys veth devices when cleaning
up the container network namespace. During normal shutdown, it
is thus likely that the attempt to run 'ip link del vethN'
will fail. If it fails, check if the device exists, and avoid
reporting an error if it has gone. This switches to use the
virCommand APIs instead of virRun too.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
During container cleanup there is a race where the kernel may
have destroyed the veth device before we try to set it offline.
This causes log error messages. Given that we're about to
delete the device entirely, setting it offline is pointless.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When querying for kvm, we try to find 'enabled' field. Hence the error
message should report we haven't found 'enabled' and not 'running'
(which is not even in the reply). Probably a typo or copy-paste error.
The qemuDomainChangeNet() is called when 'virsh update-device' is
invoked on a NIC. Currently, we fail to update the QoS even though
we have routines for that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
So far the virNetDevBandwidthEqual() expected both ->in and ->out items
to be allocated for both @a and @b compared. This is not necessary true
for all our code. For instance, running 'update-device' twice over a NIC
with the very same XML results in SIGSEGV-ing in this function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This should resolve:
https://bugzilla.redhat.com/show_bug.cgi?id=1012085
libvirt previously recognized NFS, GFS2, OCFS2, and AFS filesystems as
"shared", and thus eligible for exceptions to certain rules/actions
about chowning image files before handing them off to a guest. This
patch widens the definition of "shared filesystem" to include SMB and
CIFS filesystems (aka "Windows file sharing"); both of these use the
same protocol, but different drivers so there are different magic
numbers for each.
This basically covers the talking-to-monitor part of
virQEMUCapsInitQMP. The patch itself has no real value,
but it creates an entity to be tested in the next patches.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We forgot to do cleanup when lxcContainerMountFSTmpfs
failed to bind fs as read-only.
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The libvirtd server pushes data out to clients. It does not
know what protocol version the client might have, so must be
conservative and use the old payload limits. ie send no more
than 256kb of data per packet.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The problem is described by [0] but its effect on libvirt is that
starting a container with a full distro running systemd after having
stopped it simply fails.
The container cleanup now calls the machined Terminate function to make
sure that everything is in order for the next run.
[0]: https://bugs.freedesktop.org/show_bug.cgi?id=68370
mmap's offset must be aligned to page size or mapping will fail.
mmap-based safezero is only used if posix_fallocate isn't available.
Signed-off-by: Oskari Saarenmaa <os@ohmu.fi>
Fixed the retrieval of the AdapterId from the AdapterName of the
hostdev source so it does return an error instead of leaving the
adapter_id uninitialized.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
The change in ef29de14c3 that introduced
better error logging from qemu introduced a warning from coverity about
unused return value from lseek. Silence this warning and fix typo in the
corresponding error message.
Reported by: John Ferlan
Currently the VMware version check code only supports two types of
VMware backends, Workstation and Player. But in the near future we will
have an additional one so we need to support more. Additionally, we
discover and cache the path to the vmrun binary so we should use that
path when using the corresponding binary from the VMware VIX SDK.
Another case missed by commits 716c7bb and 6973e02.
* src/Makefile.am (VIR_NET_RPC_GENERATED): Drop $(srcdir).
(libvirt_net_rpc_la_SOURCES): List generated files more compactly.
Signed-off-by: Eric Blake <eblake@redhat.com>
When running 'make dist' on a system without policykit, we currently
fail. This is because $(srcdir)/access/org.libvirt.api.policy is in
EXTRA_DIST, however, the rule to generate the file is conditional
whether we build with polkit or not.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
On some systems (linux, cygwin and gnukfreebsd) rpcgen generates files
which when compiling produces this warning:
remote/remote_protocol.c: In function 'xdr_remote_node_get_cpu_stats_ret':
remote/remote_protocol.c:530: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
Hence, on those systems we need to post-process the files by the
rpc/genprotocol.pl perl script. At the beginning of the script the OS is
detected via $^O perl variable. From my latest build on FreeBSD I see we
need to fix the code there too. On FreeBSD the variable contains
'freebsd' string:
http://perldoc.perl.org/perlport.html#PLATFORMS
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The debug message said there was a timeout of 0 pending for -1 ms which
made me think this is where a hang was coming from but according to the
function comments this case means that there is no timeout pending so
make the debug message say that instead of saying there's a -1 ms
timeout.
While BSDs don't support process creation timestamp information via
PEERCRED for Unix sockets, we need to actually initialize the value
because it is used by the libvirt code.
https://bugzilla.redhat.com/show_bug.cgi?id=1011330 (case A)
While activeScsiHostdevs and webSocketPorts were allocated in
qemuStateInitialize, they were not freed in qemuStateCleanup.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1011330 (case D)
qemuProcessStart created two references to virQEMUDriverConfigPtr before
calling fork():
cfg = virQEMUDriverGetConfig(driver);
...
hookData.cfg = virObjectRef(cfg);
However, the child only unreferenced hookData.cfg and the parent only
removed the cfg reference. That said, we don't need to increment the
reference counter when assigning cfg to hookData. Both the child and the
parent will correctly remove the reference on cfg (the child will do
that through hookData).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1012818
Commit 6d7d0b1869 (in 1.1.2) added bounds
checking to virDomainGetJobStats. But even at that time the API was able
to return 20 parameters while the limit was set to 16.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The return value of virDomainControllerFind >=0 means that
the specific controller was found.
But some functions invoke it and treat 0 as not found.
This patch fix these incorrect invocation.
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
Since commit 297c99a5 an invalid source definition XML of a character
device that is used as backend for RNG devices, smartcards and redirdevs
causes crash of the daemon when parsing such a definition.
The device types mentioned above are not a part of a regular character
device but are backends for other types. Thus when parsing such device
NULL is passed as the argument @chr_def. Later when checking the
validity of the definition @chr_def was dereferenced when parsing a UNIX
socket backend with missing path of the socket and crashed the daemon.
Sample offending configuration:
<devices>
...
<rng model='virtio'>
<backend model='egd' type='unix'>
<source mode='bind' service='1024'/>
</backend>
</rng>
</devices>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1012196
When passing in custom driver XML, allow a block like
<domain xmlns:test='http://libvirt.org/schemas/domain/test/1.0'>
...
<test:runstate>5</test:runstate>
</domain>
This is only read at initial driver start time, and sets the initial
run state of the object. This is handy for UI testing.
It's only wired up for domains, since that's the only conf/
infrastructure that supports namespaces at the moment.
For inexplicable reasons, the nwfilter XML parser is intentionally
ignoring errors that arise during parsing. As well as meaning that
users don't get any feedback on their XML mistakes, this will lead
it to silently drop data in OOM conditions.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Normally a lockspace resource is not freed while there are
active owners. During initial resource creation though, an
OOM error will trigger this scenario. virLockSpaceResourceFree
was not freeing the 'owners' field in this case.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If OOM or another error occurs in virJSONValueFromString the
parser state object will be leaked.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If OOM occurs in virJSONParserHandleStartMap it will free
a variable that is owned by another object. This leads to
a later double-free.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If virDBusMessageIterEncode hits an OOM condition it often
leaks the memory associated with the dbus iterator object
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The code parsing comments in config files called virConfAddEntry
but did not check for failure. This caused the comment string to
leak on OOM.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virVMXFormatConfig called virVMXEscapeHexPipe but
forgot to check for OOM. This caused data to silently
be lost.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virStoragePoolDefParseSource method would set def->nhosts
before allocating def->hosts. If the allocation failed due to
OOM, the cleanup code would crash accessing out of bounds.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If xenParseSxprPCI failed to expand the def->hostdevs array
due to OOM, it would free the hostdev instance twice.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virDomainSnapshotDefParse method assigned to def->ndisks
before allocating def->disks. Thus if an OOM occurred, the
cleanup code would access out of bounds.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Several places in virInterfaceDefParseProtoIPv6 clobber the
default 'ret' return value. So when jumping to cleanup on
error, 'ret' may mistakenly be set to 0 instead of -1. This
caused failure to report OOM errors, meaning data was silently
lost during parsing.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The methods for obtaining the Xen dom ID cannot distinguish
between returning -1 due to an error and returning -1 due to
the domain being shutoff. Change them to return the dom ID
via an output parameter.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The xenParseSxpr method sets def->nconsoles to 1 before allocating
the def->consoles array. If the allocation fails due to OOM the
cleanup code will thus crash accessing out of bounds.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If an OOM occurs in xenFormatXM when formatting to the
serial device value, the value is leaked.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If an OOM occurs when xenFormatXM is setting the 'hpet'
variable it is silently ignored. Fix it to propagate
to the callers.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The xenParseXM sets def->nconsoles to 1 before claling
VIR_REALLOC_N on def->consoles. So if the alloc fails
due to OOM, the cleanup code will crash accessing a
console that does not exist.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If qemuParseCommandLine finds an arg it does not understand
it adds it to the QEMU passthrough custom arg list. If the
qemuParseCommandLine method hits an error for any reason
though, it just does 'VIR_FREE(cmd)' on the custom arg list.
This means all actual args / env vars are leaked. Introduce
a qemuDomainCmdlineDefFree method to be used for cleanup.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If the call to virDomainControllerInsert fails in
qemuParseCommandLine, the controller struct is leaked.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The 'qemuStringToArgvEnv' method splits up a string of command
line env/args to an 'arglist' array. It then copies env vars
to a 'progenv' array and args to a 'progargv' array. When
copyin the env vars, it NULL-ifies the element in 'arglist'
that is copied.
Upon OOM the 'virStringListFree' is called on progenv and
arglist. Unfortunately, because the elements in 'arglist'
related to env vars have been set to NULL, the call to
virStringListFree(arglist) doesn't free anything, even
though some non-NULL args vars still exist later in the
array.
To fix this leak, stop NULL-ifying the 'arglist' elements,
and change the cleanup code to only free elements in the
'arglist' array, not 'progenv'.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In a number of places in qemuParseCommandLineDisk, an error
is reported, but no 'goto error' jump is used. This causes
failure to report OOM conditions to the caller.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If OOM occurs in qemuParseCommandLineDisk some intermediate
variables will be leaked when parsing Sheepdog or RBD disks.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The qemuBuildCommandLine code for parsing sound cards will leak
an intermediate variable if an OOM occurs. Move the free'ing of
the variable earlier to avoid the leak.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In qemuParseNBDString, if the virURIParse fails, the
error is not reported to the caller. Instead execution
falls through to the non-URI codepath causing memory
leaks later on.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If qemuAddRBDHost fails due to parsing problems or OOM, then
qemuParseRBDString cleanup is skipped causing a memory leak.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
qemuDomainPCIAddressGetNextSlot has a loop for finding
compatible PCI buses. In the loop body it creates a
PCI address string, but never frees this. This causes
a leak if the loop executes more than one iteration,
or if a call in the loop body fails.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If virDomainSoundCodecDefParseXML returns an error (eg due
to OOM), then the xml nodeset codecNodes is leaked.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If virDomainVcpuPinDefArrayFree is called with def != NULL,
but nvcpupin == 0, then it leaks memory for 'def'. This is
an unusual scenario, but it hits when cleaning up after an
OOM during parsing of XML.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This resolves one of the issues listed in:
https://bugzilla.redhat.com/show_bug.cgi?id=1003983
00:1E.0 is the location of this controller on at least some actual Q35
hardware, so we try to replicate the placement. The bridge should work
just as well in any other location though, so if 00:1E.0 isn't
available, just allow it to be auto-assigned anywhere appropriate.
This resolves one of the issues in:
https://bugzilla.redhat.com/show_bug.cgi?id=1003983
This device is identical to qemu's "intel-hda" device (known as "ich6"
in libvirt), but has a different PCI device ID (which matches the ID
of the hda audio built into the ich9 chipset, of course). It's not
supported in earlier versions of qemu, so it requires a capability
bit.
I'm not sure why this code was written to compare the strings that it
had just retrieved from an enum->string conversion, rather than just
look at the original enum values, but this yields the same results,
and is much more efficient (especially as you add more devices).
This is a prerequisite for patches to resolve:
https://bugzilla.redhat.com/show_bug.cgi?id=1003983
Part of the resolution to:
https://bugzilla.redhat.com/show_bug.cgi?id=1003983
Although most devices available in qemu area defined as PCI devices,
and strictly speaking should only be attached via a PCI slot, in
practice qemu allows them to be attached to a PCIe slot and sometimes
this makes sense.
For example, The UHCI and EHCI USB controllers are usually attached
directly to the PCIe "root complex" (i.e. PCIe slots) on real
hardware, so that should be possible for a Q35-based qemu virtual
machine as well.
We still want to prefer a standard PCI slot when auto-assigning
addresses, though, and in general to disallow attaching PCI devices
via PCIe slots.
This patch makes that possible by adding a new
QEMU_PCI_CONNECT_TYPE_EITHER_IF_CONFIG flag. Three things are done
with this flag:
1) It is set for the "pcie-root" controller
2) qemuCollectPCIAddress() now has a set of nested switches that set
this "EITHER" flag for devices that we want to allow connecting to
pcie-root when specifically requested in the config.
3) qemuDomainPCIAddressFlagsCompatible() adds this new flag to the
"flagsMatchMask" if the address being checked came from config rather
than being newly auto-allocated by libvirt (this knowledge is
conveniently already available in the "fromConfig" arg).
Now any device having the EITHER flag set can be connected to
pcie-root if explicitly requested, but auto-allocated addresses for
those devices will still be standard PCI slots instead.
This patch only loosens the restrictions on devices that have been
specifically requested, but the setup is such that it should be fairly
easy to add new devices.
Replace them with switch cases. This will make it more efficient when
we add exceptions for more controller types, and other device types.
This is a prerequisite for patches to resolve:
https://bugzilla.redhat.com/show_bug.cgi?id=1003983
Packets sent by guests on virbrN, *or* by dnsmasq on the same, to
- 255.255.255.255/32 (netmask-independent local network broadcast
address), or to
- 224.0.0.0/24 (local subnetwork multicast range)
are never forwarded, hence it is not necessary to masquerade them.
In fact we must not masquerade them: translating their source addresses or
source ports (where applicable) may confuse receivers on virbrN.
One example is the DHCP client in OVMF (= UEFI firmware for virtual
machines):
http://thread.gmane.org/gmane.comp.bios.tianocore.devel/1506/focus=2640
It expects DHCP replies to arrive from remote source port 67. Even though
dnsmasq conforms to that, the destination address (255.255.255.255) and
the source address (eg. 192.168.122.1) in the reply allow the UDP
masquerading rule to match, which rewrites the source port to or above
1024. This prevents the DHCP client in OVMF from accepting the packet.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=709418
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
The functions
- iptablesAddForwardDontMasquerade(),
- iptablesRemoveForwardDontMasquerade
handle exceptions in the masquerading implemented in the POSTROUTING chain
of the "nat" table. Such exceptions should be added as chronologically
latest, logically top-most rules.
The bridge driver will call these functions beginning with the next patch:
some special destination IP addresses always refer to the local
subnetwork, even though they don't match any practical subnetwork's
netmask. Packets from virbrN targeting such IP addresses are never routed
outwards, but the current rules treat them as non-virbrN-destined packets
and masquerade them. This causes problems for some receivers on virbrN.
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
The previous patches added infrastructure to report better errors from
monitor in some cases. This patch finalizes this "feature" by enabling
this enhanced error reporting on early phases of VM startup. In these
phases the possibility of qemu producing a useful error message is
really high compared to running it during the whole life cycle. After
the start up is complete, the feature is disabled to provide the usual
error messages so that users are not confused by possibly irrelevant
messages that may be in the domain log.
The original motivation to do this enhancement is to capture errors when
using VFIO device passthrough, where qemu reports errors after the
monitor is initialized and the existing error catching code couldn't
catch this producing a unhelpful message:
# virsh start test
error: Failed to start domain test
error: Unable to read from monitor: Connection reset by peer
With this change, the message is changed to:
# virsh start test
error: Failed to start domain test
error: internal error: early end of file from monitor: possible problem:
qemu-system-x86_64: -device vfio-pci,host=00:1a.0,id=hostdev0,bus=pci.0,addr=0x5: vfio: error, group 8 is not viable, please ensure all devices within the iommu_group are bound to their vfio bus driver.
qemu-system-x86_64: -device vfio-pci,host=00:1a.0,id=hostdev0,bus=pci.0,addr=0x5: vfio: failed to get group 8
qemu-system-x86_64: -device vfio-pci,host=00:1a.0,id=hostdev0,bus=pci.0,addr=0x5: Device 'vfio-pci' could not be initialized
Change the monitor error code to add the ability to access the qemu log
file using a file descriptor so that we can dig in it for a more useful
error message. The error is now logged on monitor hangups and overwrites
a possible lesser error. A hangup on the monitor usualy means that qemu
has crashed and there's a significant chance it produced a useful error
message.
The functionality will be latent until the next patch.
Early VM startup errors usually produce a better error message in the
machine log file. Currently we were accessing it only when the process
exited during certain phases of startup. This will help adding a more
comprehensive error extraction for early qemu startup phases.
This patch adds infrastructure to keep a file descriptor for the machine
log file that will be used in case an error happens.
Teach the function to skip character device definitions printed by qemu
at startup in addition to libvirt log messages and make it usable from
outside of qemu_process.c. Also add documentation about the func.
The parsing of '-usb' did not check for failure of the
virDomainControllerInsert method. As a result on OOM, the
parser mistakenly attached USB disks to the IDE controller.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The code formatting NUMA args was ignoring the return value
of virBitmapFormat, so on OOM, it would silently drop the
NUMA cpumask arg.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When building boot menu args, if OOM occurred the CLI args
would end up containing 'order=(null)' due to a missing
call to 'virBufferError'.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
On win32, using text mode for binary files might result in short
reads since ASCII character 0x1A is interpreted as EOF. Also, it
could lead to problems using the seek functions because of the \r
handling.
Signed-off-by: Claudio Bley <cbley@av-test.de>
N.B. This had no ill effects as long as O_RDONLY is defined to
to be 0, such that the expression (O_RDONLY < 0) yielded 0
again.
Signed-off-by: Claudio Bley <cbley@av-test.de>
The virCommandAddEnvPassCommon method ignored the failure to
pre-allocate the env variable array with VIR_RESIZE_N. While
this is harmless, it confuses the test harness which is trying
to validate OOM handling of every individual allocation call.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When the various viralloc.c functions were changed to use the
normal error reporting code, the OOM injection code paths
were not updated to report errors.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The qemuParseCommandLine method did not check the return value of
virStringSplit to see if OOM had occurred. This lead to dereference
of a NULL pointer on OOM.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Most callers of qemuParseKeywords were assigning its return
value to a 'size_t' variable. Then then also checked '< 0'
for error condition, but this will never be true with the
unsigned size_t variable. Rather than using 'ssize_t', change
qemuParseKeywords so that the element count is returned via
an output parameter, leaving the return value solely as an
error indicator.
This avoids a crash accessing beyond the end of an error
upon OOM.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In
commit 41b5505679
Author: Eric Blake <eblake@redhat.com>
Date: Wed Aug 28 15:01:23 2013 -0600
qemu: simplify list cleanup
The qemuStringToArgvEnv method was changed to use virStringFreeList
to free the 'arglist' array. This method assumes the string list
array is NULL terminated, however, qemuStringToArgvEnv was not
ensuring this when populating 'arglist'. This caused an out of
bounds access by virStringFreeList when OOM occured in the initial
loop of qemuStringToArgvEnv
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When parsing the RBD hosts, it increments the 'nhosts' counter
before increasing the 'hosts' array allocation. If an OOM then
occurs when increasing the array allocation, the cleanup block
will attempt to access beyond the end of the array. Switch
to using VIR_EXPAND_N instead of VIR_REALLOC_N to protect against
this mistake
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If OOM occurs in qemuDomainCCWAddressSetCreate, it jumps to
a cleanup block and frees the partially initialized object.
It then mistakenly returns the address of the just free'd
pointer instead of NULL.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If a OOM error occurs in virGetConnect, this may cause the
virConnectDispose method to de-reference a NULL pointer,
since the close callback will not have been initialized.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virDomainDefParseXML method did not check the return value
of the virBitmapNew API call for NULL. This lead to a crash on
OOM
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If an OOM error occurs in virSecurityDeviceLabelDefParseXML the
cleanup code may free an uninitialized pointer, causing a crash
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
To allow creation of a virNetSocketPtr instance from a pre-opened
socketpair FD, add a virNetSocketNewConnectSockFD method.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The new function virConnectGetCPUModelNames allows to retrieve the list
of CPU models known by the hypervisor for a specific architecture.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The fix for CVE-2013-4311 had a pre-requisite enhancement
to the identity code
commit db7a5688c0
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Thu Aug 22 16:00:01 2013 +0100
Also store user & group ID values in virIdentity
This had a typo which caused the group ID to overwrite the
user ID string. This meant any checks using this would have
the wrong ID value. This only affected the ACL code, not the
initial polkit auth. It also leaked memory.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If a dir does not exist, raise an immediate error in logs
rather than letting virFileResolveAllLinks fail, since this
gives better error reporting to the user.
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
When FUSE is enabled, the LXC container is setup with
a custom /proc/meminfo file. This file uses "KB" as a
suffix, rather than "kB" which is the kernel's style.
Fix this inconsistency to avoid confusing apps.
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
The ABI compatibility check for domain features didn't check the
expanded HyperV and APIC EOI values, thus possibly allowing change in
guest ABI.
Add the check and use typecasted switch statement to warn developers
when adding a new HyperV feature.
Since the wait is done during migration (still inside
QEMU_ASYNC_JOB_MIGRATION_OUT), the code should enter the monitor as such
in order to prohibit all other jobs from interfering in the meantime.
This patch fixes bug #1009886 in which qemuDomainGetBlockInfo was
waiting on the monitor condition and after GetSpiceMigrationStatus
mangled its internal data, the daemon crashed.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1009886
This splits up the version parsing code into a callable API like QEMU
help/version string parsing so that we can test it as we need to add
additional patterns for newer versions/products.
Rather than looking up the path to vmrun each time we call it, look it
up once and save it. This sets up the ability for us to detect where the
path is on Mac OS X and not have to look it up each time we execute it.
The VMware driver supports multiple backends for the VMware Player and
VMware Workstation, convert this logic into enum and use VIR_ENUM_IMPL()
to provide conversions to and from strings.
This resolves https://bugzilla.redhat.com/show_bug.cgi?id=1008903
The Q35 machinetype has an implicit SATA controller at 00:1F.2 which
isn't given the "expected" id of ahci0 by qemu when it's created. The
original suggested solution to this problem was to not specify any
controller for the disks that use the default controller and just
specify "unit=n" instead; qemu should then use the first IDE or SATA
controller for the disk.
Unfortunately, this "solution" is ignorant of the fact that in the
case of SATA disks, the "unit" attribute in the disk XML is actually
*not* being used for the unit, but is instead used to specify the
"bus" number; each SATA controller has 6 buses, and each bus only
allows a single unit. This makes it nonsensical to specify unit='n'
where n is anything other than 0. It also means that the only way to
connect more than a single device to the implicit SATA controller is
to explicitly give the bus names, which happen to be "ide.$n", where
$n can be replaced by the disk's "unit" number.
In commit 6d41cb8, the interface for virEventAddHandleFunc was changed.
This patch updates the documentation for virEventAddHandle to reflect
the new significance of the return value. Also, both functions now
mention -1 for failure.
With the existing pkcheck (pid, start time) tuple for identifying
the process, there is a race condition, where a process can make
a libvirt RPC call and in another thread exec a setuid application,
causing it to change to effective UID 0. This in turn causes polkit
to do its permission check based on the wrong UID.
To address this, libvirt must get the UID the caller had at time
of connect() (from SO_PEERCRED) and pass a (pid, start time, uid)
triple to the pkcheck program.
This fix requires that libvirt is re-built against a version of
polkit that has the fix for its CVE-2013-4288, so that libvirt
can see 'pkg-config --variable pkcheck_supports_uid polkit-gobject-1'
Signed-off-by: Colin Walters <walters@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The polkit access driver will want to use the process start
time field. This was already set for network identities, but
not for the system identity.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Future improvements to the polkit code will require access to
the numeric user ID, not merely user name.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
virDomainSetBlockIoTuneEnsureACL was incorrectly called after we already
started a job. As a result of this, the job was not cleaned up when an
access driver had forbidden the action.
Useful to set custom forwarders instead of using the contents of
/etc/resolv.conf. It helps me to setup dnsmasq as local nameserver to
resolve VM domain names from domain 0, when domain option is used.
Signed-off-by: Diego Woitasen <diego.woitasen@vhgroup.net>
Signed-off-by: Eric Blake <eblake@redhat.com>
VMWare Fusion 5 can set the CD-ROM's device name to be 'auto detect' when
using the physical drive via 'cdrom-raw' device type. VMWare will then
connect to first available host CD-ROM to the virtual machine upon start
up according to VMWare documentation. If no device is available, it
appears that the device will remain disconnected.
To better model this a CD-ROM that is marked as "auto detect" when in
the off state would be modeled as the following with this patch:
<disk type='block' device='lun'>
<source startupPolicy='optional'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
Once the domain transitions to the powered on state, libvirt can
populate the remaining source data with what is connected, if anything.
However future power cycles, the domain may not always start with that
device attached.
Currently the XML parser already allows the following syntax:
<disk type='block' device='cdrom'>
<source startupPolicy='optional'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
But it if the dev value is NULL then it would not have the leading
"<source ", resulting in invalid XML.
qemu/KVM also supports a tftp URL while specifying the cdrom ISO image.
The xml should be as following:
<disk type='network' device='cdrom'>
<source protocol='tftp' name='/url/path'>
<host name='host.name' port='69'/>
</source>
</disk>
Signed-off-by: Aline Manera <alinefm@br.ibm.com>
The ftps protocol is another protocol supported by qemu/KVM while specifying
the cdrom ISO image.
The xml should be as following:
<disk type='network' device='cdrom'>
<source protocol='ftps' name='/url/path'>
<host name='host.name' port='990'/>
</source>
</disk>
Signed-off-by: Aline Manera <alinefm@br.ibm.com>
The https protocol is also accepted by qemu/KVM when specifying the cdrom ISO
image.
The xml should be as following:
<disk type='network' device='cdrom'>
<source protocol='https' name='/url/path'>
<host name='host.name' port='443'/>
</source>
</disk>
Signed-off-by: Aline Manera <alinefm@br.ibm.com>
GCC 4.8.0+ whines about variable "new" being uninitialized since
commit 73bfac0e71. This is a false positive as the
xmlFreeNode(new) statement can be only reached if new was actually
allocated successfully.
CC conf/libvirt_conf_la-domain_conf.lo
conf/domain_conf.c: In function 'virDomainDefSetMetadata':
conf/domain_conf.c:18650:24: error: 'new' may be used uninitialized in this function [-Werror=maybe-uninitialized]
xmlFreeNode(new);
Reported independently by John Ferlan and Michal Privoznik.
Commit 073e1575 tried to set things up so that 1) generated files
to be shipped in the tarball always live in srcdir, and 2) we have
no files in SOURCES that depend on any other files with a literal
$(srcdir) in the name, because that situation can cause confusing
results for the make expansion of $@ depending on whether the file
is found locally or via VPATH. But all my testing for that patch
was done incrementally, where all the protocol.[ch] files had
already been generated prior to the patch and were up-to-date in
the srcdir, and thus I missed one case where $@ causes grief in a
VPATH build from a fresh checkout:
We have a pattern rule for generating remote_protocol.[ch], and
what's more, the rule for protocol.c depends on protocol.h AND
on the protocol.x file. The pattern for protocol.c is only
satisfied via the VPATH lookup for protocol.x, and if protocol.h
doesn't yet exist, the VPATH rule kicks in and we end up with a
dependency on a file with $(srcdir) in the name. Based on make's
rules for $@, this resulted in make building remote_protocol.h
into srcdir (where we want it), then remote_protocol.c into
builddir (oops, not so good for the tarball), and also causes
the build to fail (the compiler can't find the .h if it lives
in a different directory than the .c):
CC remote/libvirt_driver_remote_la-remote_protocol.lo
remote/remote_protocol.c:7:29: fatal error: remote_protocol.h: No such file or directory
#include "remote_protocol.h"
^
compilation terminated.
As before, the fix is to hard-code the output file to go into
srcdir in spite of $@; but since this is in a pattern rule, we
are forced to use $@ in the recipe, so the patch is a bit
trickier than what was done in commit 073e1575.
* src/Makefile.am (%protocol.c, %protocol.h): Force output to srcdir.
Signed-off-by: Eric Blake <eblake@redhat.com>
Eric Blake suggested that we could do a little better in case copying of
the metadata to be set fails. With this patch, the old metadata is
discarded after the new string is copied successfuly.
If the ABI compatibility check with the "migratable" user XML is
successful, we would leak the originally parsed XML from the user that
would not be used in this case.
Reported by Ján Tomko.
virDomainSetMetadata when operating on the metadata element was
requesting the @key argument to be passed even if @metadata was NULL
used to delete the corresponding metadata element. This is not needed as
the key is only used when adding the element and matching is done via
the XML namespace.
The virDomainGetMetadata function was designed to support also retrieval
of app specific metadata from the <metadata> element. This functionality
was never implemented originally.
The function implemented common behavior that can be reused for other
hypervisor drivers that use the virDomainObj data structures. Factor out
the core into a separate helper func.
The function implemented common behavior that can be reused for other
hypervisor drivers that use the virDomainObj data structures. Factor out
the core into a separate helper func.
In the original implementation of external checkpoints I've mistakenly
used the live definition to be stored in the save image. The normal
approach is to use the "migratable" definition. This was discovered when
commit 07966f6a8b changed the behavior to
use a converted XML from the user to do the compatibility check to fix
problem when using the regular machine saving.
As the previous patch added a compatibility layer, we can now change the
type of the XML in the image.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1008340
External checkpoints have a bug in the implementation where they use the
normal definition instead of the "migratable" one. This causes errors
when the snapshot is being reverted using the workaround method via
qemuDomainRestoreFlags() with a custom XML. This issue was introduced
when commit 07966f6a8b changed the code to
compare "migratable" XMLs from the user as we should have used
migratable in the image too.
This patch adds a compatibility layer, so that fixing the snapshot code
won't make existing snapshots fail to load.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1008340
CD-ROMs and Floppies are allowed to have no source to imply they are
empty or disconnected. Since the LUN type is used for raw CD-ROM access
with QEMU (and VMWare in the future), it also needs to allow an empty
source when the raw CD-ROM device is disconnected from the domain.
qemuMigrationEatCookie has flags to control if these should
be parsed, but it does not fill mig->flags. These cookies might
get leaked if these flags are not set by qemuMigrationBakeCookie.
42 (32 direct, 10 indirect) bytes in 1 blocks are definitely lost in
loss record 361 of 662
==123== by 0x1BA33FCA: qemuMigrationEatCookie (qemu_migration.c:678)
==123== by 0x1BA34A1E: qemuMigrationRun (qemu_migration.c:3108)
==123== by 0x1BA3622B: doNativeMigrate (qemu_migration.c:3343)
==123== by 0x1BA3B408: qemuMigrationPerform (qemu_migration.c:4138)
https://bugzilla.redhat.com/show_bug.cgi?id=1008619
1,003 bytes in 1 blocks are definitely lost in loss record 599 of 635
==404== by 0x50728A7: virBufferAddChar (virbuffer.c:185)
==404== by 0x50BC466: virSystemdEscapeName (virsystemd.c:67)
==404== by 0x50BC6B2: virSystemdMakeSliceName (virsystemd.c:108)
==404== by 0x50BC870: virSystemdCreateMachine (virsystemd.c:169)
==404== by 0x5078267: virCgroupNewMachine (vircgroup.c:1498)
Bother those kernel developers. In the latest rawhide, kernel
and glibc have now been unified so that <netinet/in.h> and
<linux/in6.h> no longer clash; but <linux/if_bridge.h> is still
not self-contained. Because of the latest header change, the
build is failing with:
checking for linux/param.h... no
configure: error: You must install kernel-headers in order to compile libvirt with QEMU or LXC support
with details:
In file included from conftest.c:561:0:
/usr/include/linux/in6.h:71:18: error: field 'flr_dst' has incomplete type
struct in6_addr flr_dst;
We need a workaround to avoid our workaround :)
* configure.ac (NETINET_LINUX_WORKAROUND): New test.
* src/util/virnetdevbridge.c (includes): Use it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Since virnetsocket conditionally uses selinux we need to link against it
otherwise the build fails with:
CCLD libvirtd
/usr/bin/ld: ../src/.libs/libvirt-lxc.so: undefined reference to symbol 'freecon'
/lib/i386-linux-gnu/libselinux.so.1: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[3]: *** [libvirtd] Error 1
An off-list bug report mentioned some confusion where the public
documentation of libvirt.c:virConnectGetHostname did not match
the private documentation of util/virutil.c:virGetHostname.
* src/libvirt.c (virConnectGetHostname): Tweak docs.
Signed-off-by: Eric Blake <eblake@redhat.com>
The VIR_ACCESS_PERM_CONNECT_DETECT_STORAGE_POOLS enum
constant had its string format be 'detect_storage_pool',
note the missing trailing 's'. This prevent the ACL
check from ever succeeding. Fix this and add a simple
test script to validate this problem of matching names.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Right now we mount selinuxfs even user namespace is enabled and
ignore the error. But we shouldn't ignore these errors when user
namespace is not enabled.
This patch skips mounting selinuxfs when user namespace enabled.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
When reverting a live internal snapshot with a live guest the ABI
compatiblity check was comparing a "migratable" definition with a normal
one. This resulted in the check failing with:
revert requires force: Target device address type none does not match source pci
This patch generates a "migratable" definition from the actual one to
check against the definition from the snapshot to avoid this problem.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1006886
This resolves: https://bugzilla.redhat.com/show_bug.cgi?id=983026
The netcf interface driver previously had no state driver associated
with it - as a connection was opened, it would create a new netcf
instance just for that connection, and close it when it was
finished. the problem with this is that each connection to libvirt
used up a netlink socket, and there is a per process maximum of ~1000
netlink sockets.
The solution is to create a state driver to go along with the netcf
driver. The state driver will opens a netcf instance, then all
connections share that same netcf instance, thus only a single
netlink socket will be used no matter how many connections are mde to
libvirtd.
This was rather simple to do - a new virObjectLockable class is
created for the single driverState object, which is created in
netcfStateInitialize and contains the single netcf handle; instead of
creating a new object for each client connection, netcfInterfaceOpen
now just increments the driverState object's reference count and puts
a pointer to it into the connection's privateData. Similarly,
netcfInterfaceClose() just un-refs the driverState object (as does
netcfStateCleanup()), and virNetcfInterfaceDriverStateDispose()
handles closing the netcf instance. Since all the functions already
have locking around them, the static lock functions used by all
functions just needed to be changed to call virObjectLock() and
virObjectUnlock() instead of directly calling the virMutex* functions.
This better fits the modern naming scheme in libvirt, and anticipates
an upcoming change where a single instance of this state will be
maintained by a separate state driver, and every instance of the netcf
driver will share the same state.
If the guest is configured with
<filesystem type='mount'>
<source dir='/'/>
<target dir='/'/>
<readonly/>
</filesystem>
Then any submounts under / should also end up readonly, except
for those setup as basic mounts. eg if the user has /home on a
separate volume, they'd expect /home to be readonly, but we
should not touch the /sys, /proc, etc dirs we setup ourselves.
Users can selectively make sub-mounts read-write again by
simply listing them as new mounts without the <readonly>
flag set
<filesystem type='mount'>
<source dir='/home'/>
<target dir='/home'/>
</filesystem>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Move the array of basic mounts out of the lxcContainerMountBasicFS
function, to a global variable. This is to allow it to be referenced
by other methods wanting to know what the basic mount paths are.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Debian systems may run the 'systemd-logind' daemon, which causes the
/sys/fs/cgroup/systemd mount to be setup, but no other cgroup
controllers are created. While the LXC driver considers cgroups to
be mandatory, the QEMU driver is supposed to accept them as optional.
We detect whether they are present by looking in /proc/mounts for
any mounts of type 'cgroups', but this is not sufficient. We need to
skip any named mounts (as seen by a name=XXX string in the mount
options), so that we only detect actual resource controllers.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721979
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The polkit access driver used the wrong permission names for checks
on storage pools, volumes and node devices. This led to them always
being denied access.
The 'dettach' permission was also mis-spelt and should have been
'detach'. While permission names are ABI sensitive, the fact that
the code used the wrong object name for checking node device
permissions, means that no one could have used the mis-spelt
'dettach' permission.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This fixes the description of virConnectGetType() API function in
API documentation to match the real functionality that it can be
used to get driver name, and provide a hint on how to learn about
full capabilities.
Signed-off-by: Michal Novotny <minovotn@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This patch introduces virDBusIsServiceEnabled, we can use
this method to get if the service is supported.
In one case, if org.freedesktop.machine1 is unavailable on
host, we should skip creating machine through systemd.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
The devpts, dev and fuse filesystems are mounted temporarily.
there is no need to export them to container if container shares
the root directory with host.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Some users in Ubuntu/Debian seem to have a setup where all the
cgroup controllers are mounted on /sys/fs/cgroup rather than
any /sys/fs/cgroup/<controller> name. In the loop which detects
which controllers are present for a mount point we were modifying
'mnt_dir' field in the 'struct mntent' var, but not always restoring
the original value. This caused detection to break in the all-in-one
mount setup.
Fix that logic bug and add test case coverage for this mount
setup.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
After freeing the bitmap pointer, it must set the pointer to NULL.
This will avoid any other use of the freed memory of the bitmap pointer.
https://bugzilla.redhat.com/show_bug.cgi?id=1006710
Signed-off-by: Liuji (Jeremy) <jeremy.liu@huawei.com>
Osier Yang pointed out that ever since commit 31cb030, the
signature of qemuDomainObjEndJob was changed to return a bool.
While comparison against 0 or > 0 still gives the right results,
it looks fishy; we also had one place that was comparing < 0
which is effectively dead code.
* src/qemu/qemu_migration.c (qemuMigrationPrepareAny): Fix dead
code bug.
(qemuMigrationBegin): Use more canonical form of bool check.
* src/qemu/qemu_driver.c (qemuAutostartDomain)
(qemuDomainCreateXML, qemuDomainSuspend, qemuDomainResume)
(qemuDomainShutdownFlags, qemuDomainReboot, qemuDomainReset)
(qemuDomainDestroyFlags, qemuDomainSetMemoryFlags)
(qemuDomainSetMemoryStatsPeriod, qemuDomainInjectNMI)
(qemuDomainSendKey, qemuDomainGetInfo, qemuDomainScreenshot)
(qemuDomainSetVcpusFlags, qemuDomainGetVcpusFlags)
(qemuDomainRestoreFlags, qemuDomainGetXMLDesc)
(qemuDomainCreateWithFlags, qemuDomainAttachDeviceFlags)
(qemuDomainUpdateDeviceFlags, qemuDomainDetachDeviceFlags)
(qemuDomainBlockResize, qemuDomainBlockStats)
(qemuDomainBlockStatsFlags, qemuDomainMemoryStats)
(qemuDomainMemoryPeek, qemuDomainGetBlockInfo)
(qemuDomainAbortJob, qemuDomainMigrateSetMaxDowntime)
(qemuDomainMigrateGetCompressionCache)
(qemuDomainMigrateSetCompressionCache)
(qemuDomainMigrateSetMaxSpeed)
(qemuDomainSnapshotCreateActiveInternal)
(qemuDomainRevertToSnapshot, qemuDomainSnapshotDelete)
(qemuDomainQemuMonitorCommand, qemuDomainQemuAttach)
(qemuDomainBlockJobImpl, qemuDomainBlockCopy)
(qemuDomainBlockCommit, qemuDomainOpenGraphics)
(qemuDomainGetBlockIoTune, qemuDomainGetDiskErrors)
(qemuDomainPMSuspendForDuration, qemuDomainPMWakeup)
(qemuDomainQemuAgentCommand, qemuDomainFSTrim): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Automake 2.0 will enable subdir-objects by default; in preparation
for that change, automake 1.14 outputs LOADS of warnings:
daemon/Makefile.am:38: warning: source file '../src/remote/remote_protocol.c' is in a subdirectory,
daemon/Makefile.am:38: but option 'subdir-objects' is disabled
automake-1.14: warning: possible forward-incompatibility.
automake-1.14: At least a source file is in a subdirectory, but the 'subdir-objects'
automake-1.14: automake option hasn't been enabled. For now, the corresponding output
automake-1.14: object file(s) will be placed in the top-level directory. However,
automake-1.14: this behaviour will change in future Automake versions: they will
automake-1.14: unconditionally cause object files to be placed in the same subdirectory
automake-1.14: of the corresponding sources.
automake-1.14: You are advised to start using 'subdir-objects' option throughout your
automake-1.14: project, to avoid future incompatibilities.
daemon/Makefile.am:38: warning: source file '../src/remote/lxc_protocol.c' is in a subdirectory,
daemon/Makefile.am:38: but option 'subdir-objects' is disabled
...
As automake 1.9 also supported this option, and the previous patches
fixed up the code base to work with it, it is safe to now turn it on
unconditionally.
* configure.ac (AM_INIT_AUTOMAKE): Enable subdir-objects.
* .gitignore: Ignore .dirstamp directories.
* src/Makefile.am (PDWTAGS, *-protocol-struct): Adjust to
new subdir-object location of .lo files.
Signed-off-by: Eric Blake <eblake@redhat.com>
We have been adding new .x files without keeping the list of
*-structs files up-to-date. This adds the support for the
recent additions.
In the process of testing this, I also noticed that Fedora 19's
use of dwarves-1.10 (providing pdwtags version 1.9) was producing
a single line on stderr but still giving enough useful info on
stdout that we could check structs; the real goal of checking
stderr separately from stdout was to avoid the bug in dwarves-1.9
where stdout was empty (see bug http://bugzilla.redhat.com/772358).
* src/Makefile.am (struct_prefix, PROTOCOL_STRUCTS): Add missing
struct tests.
(PDWTAGS): Work with Fedora 19 pdwtags.
(lxc_monitor_protocol-struct, lock_protocol-struct): New rules.
* src/lxc_monitor_protocol-structs: New file.
* src/lock_protocol-structs): Likewise.
* cfg.mk (generated_files): Enlarge list.
Signed-off-by: Eric Blake <eblake@redhat.com>
Trying to enable automake's subdir-objects option resulted in
the creation of literal directories such as src/$(srcdir)/remote/.
I traced this to the fact that we had used a literal $(srcdir)
in a location that later fed an automake *_SOURCES variable.
This has also been reported as an automake bug:
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13928
but it's better to fix our code than to wait for an automake fix.
Some things to remember that affect VPATH builds, and where an
in-tree build is blissfully unaware of the issues: if a VPATH
build fails to find a file that was used as a prereq of any
other target, then the rule for that file will expand $@ to
prefer the current build dir (bad because a VPATH build on a
fresh checkout will then stick $@ in the current directory
instead of the desired srcdir); conversely, if a VPATH build
finds the file in srcdir but decides it needs to be rebuilt,
then the rule for that file will expand $@ to include the
directory where it was found out-of-date (bad for an explicit
listing of $(srcdir)/$@ because an incremental VPATH build will
then expand srcdir twice). As we want these files to go into
srcdir unconditionally, we have to massage or avoid $@ for any
recipe that involves one of these files.
Therefore, this patch removes all uses of $(srcdir) from any
generated file name that later feeds a *_SOURCES variable, and
then rewrites all the recipes to generate those files to
hard-code their creation into srcdir without the use of $@.
* src/Makefile.am (REMOTE_DRIVER_GENERATED): Drop $(srcdir); VPATH
builds know how to find the files, and automake subdir-objects
fails with it in place.
(LXC_MONITOR_PROTOCOL_GENERATED, (LXC_MONITOR_GENERATED)
(ACCESS_DRIVER_GENERATED, LOCK_PROTOCOL_GENERATED): Likewise.
(*_client_bodies.h): Hard-code rules to write into srcdir, as
VPATH tries to build $@ locally if missing.
(util/virkeymaps.h): Likewise.
(lxc/lxc_monitor_dispatch.h): Likewise.
(access/viraccessapi*): Likewise.
(locking/lock_daemon_dispatch_stubs.h): Likewise.
* daemon/Makeflie.am (DAEMON_GENERATED, remote_dispatch.h):
Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
fixup DAEMON_GENERATED
Failure to attach to a domain during 'virsh qemu-attach' left
the list of domains in an odd state:
$ virsh qemu-attach 4176
error: An error occurred, but the cause is unknown
$ virsh list --all
Id Name State
----------------------------------------------------
2 foo shut off
$ virsh qemu-attach 4176
error: Requested operation is not valid: domain is already active as 'foo'
$ virsh undefine foo
error: Failed to undefine domain foo
error: Requested operation is not valid: cannot undefine transient domain
$ virsh shutdown foo
error: Failed to shutdown domain foo
error: invalid argument: monitor must not be NULL
It all stems from leaving the list of domains unmodified on
the initial failure; we should follow the lead of createXML
which removes vm on failure (the actual initial failure still
needs to be fixed in a later patch, but at least this patch
gets us to the point where we aren't getting stuck with an
unremovable "shut off" transient domain).
While investigating, I also found a leak in qemuDomainCreateXML;
the two functions should behave similarly. Note that there are
still two unusual paths: if dom is not allocated, the user will
see an OOM error even though the vm remains registered (but oom
errors already indicate tricky cleanup); and if the vm starts
and then quits again all before the job ends, it is possible
to return a non-NULL dom even though the dom will no longer be
useful for anything (but this at least lets the user know their
short-lived vm ran).
* src/qemu/qemu_driver.c (qemuDomainCreateXML): Don't leak vm on
failure to obtain job.
(qemuDomainQemuAttach): Match cleanup of qemuDomainCreateXML.
Signed-off-by: Eric Blake <eblake@redhat.com>
ARM v7 can operate in either little or big endian modes. Add
support for the big-endian version known as armv7b from uname.
Signed-off-by: Yogesh Tillu <tillu.yogesh@gmail.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Currently, only X86 provides users CPU features with CPUID instruction.
If users specify the features for non-x86, it should tell users to
remove them.
This patch is to report one error if features are specified by
users for non-x86 platform.
Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
While debugging a failure of 'virsh qemu-attach', I noticed that
we were leaking the count of active domains on failure. This
means that a libvirtd session that is supposed to quit after
active domains disappear will hang around forever.
* src/qemu/qemu_process.c (qemuProcessAttach): Undo count of
active domains on failure.
Signed-off-by: Eric Blake <eblake@redhat.com>
In Fedora 19, 'qemu-kvm' is a simple wrapper that calls
'qemu-system-x86_64 -machine accel=kvm'. Attempting
to use 'virsh qemu-attach $pid' to a machine started as:
qemu-kvm -cdrom /var/lib/libvirt/images/foo.img \
-monitor unix:/tmp/demo,server,nowait -name foo \
--uuid cece4f9f-dff0-575d-0e8e-01fe380f12ea
was failing with:
error: XML error: No PCI buses available
because we did not see 'kvm' in the executable name read from
/proc/$pid/cmdline, and tried to assign os.machine as
"accel=kvm" instead of "pc"; this in turn led to refusal to
recognize the pci bus.
Noticed while investigating https://bugzilla.redhat.com/995312
although there are still other issues to fix before that bug
will be completely solved.
I've concluded that the existing parser code for native-to-xml
is a horrendous hodge-podge of ad-hoc approaches; I basically
rewrote the -machine section to be a bit saner.
* src/qemu/qemu_command.c (qemuParseCommandLine): Don't assume
-machine argument is always appropriate for os.machine; set
virtType if accel is present.
Signed-off-by: Eric Blake <eblake@redhat.com>
'virsh domxml-from-native' and 'virsh qemu-attach' could misbehave
for an emulator installed in (a somewhat unlikely) location
such as /usr/local/qemu-1.6/qemu-system-x86_64 or (an even less
likely) /opt/notxen/qemu-system-x86_64. Limit the strstr seach
to just the basename of the file where we are assuming details
about the binary based on its name.
While testing, I accidentally triggered a core dump during strcmp
when I forgot to set os.type on one of my code paths; this patch
changes such a coding error to raise a nicer internal error instead.
* src/qemu/qemu_command.c (qemuParseCommandLine): Compute basename
earlier.
* src/conf/domain_conf.c (virDomainDefPostParseInternal): Avoid
NULL deref.
Signed-off-by: Eric Blake <eblake@redhat.com>
The regular expression used to determine guest capabilities
was compiled in libxlCapsInitHost() but used in libxlCapsInitGuests().
Move compilation to libxlCapsInitGuests() where it is used, and free
the compiled regex after use. Ensure not to free the regex if
compilation fails.
On Power platform, Power7+ can support Power7 guest.
It needs to define XML configuration to specify guest's CPU model.
For exmaple:
<cpu match='exact'>
<model>POWER7_v2.1</model>
<vendor>IBM</vendor>
</cpu>
Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
CPU features are not supported on non-x86 and hasFeatures will be NULL.
This patch is to remove CPU features functions calling to avoid errors.
Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
This patch changes virFileLoopDeviceOpen() to use the new loop-control
device to allocate a new loop device. If this behavior is unsupported
we fall back to the previous method of searching /dev for a free device.
With this patch you can start as many image based LXC domains as you
like (well almost).
Fixes bug https://bugzilla.redhat.com/show_bug.cgi?id=995543
Right now, securityfs is disallowed to be mounted in non-initial
user namespace, so we must avoid trying to mount securityfs in
a container which has user namespace enabled.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
The ESX code has a method esxVI_Alloc which would call
virAllocN directly, instead of using the VIR_ALLOC_N
macro. Remove this method and make the callers just
use VIR_ALLOC as is normal practice.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Delete the USB controller check from the USB Device checklist in
virDomainDeviceIsUSB as USB controller is a PCI device rather than
a USB one.
Signed-off-by: Liu Ji <jeremy.liu@huawei.com>
The s390, ppc and arm CPU drivers never set the 'arch' field
in their impl of cpuArchNodeData. This leads to error messages
being reported from cpuDataFree later, due to trying to use
VIR_ARCH_NONE.
#0 virRaiseErrorFull (filename=filename@entry=0x76f94434 "cpu/cpu.c", funcname=funcname@entry=0x76f942dc <__FUNCTION__.18096> "cpuGetSubDriver", linenr=linenr@entry=58,
domain=domain@entry=31, code=code@entry=1, level=level@entry=VIR_ERR_ERROR, str1=0x76f70e18 "internal error: %s",
str2=str2@entry=0x7155f2ec "undefined hardware architecture", str3=str3@entry=0x0, int1=int1@entry=-1, int2=int2@entry=-1, fmt=0x76f70e18 "internal error: %s")
at util/virerror.c:646
#1 0x76e682ea in virReportErrorHelper (domcode=domcode@entry=31, errorcode=errorcode@entry=1, filename=0x76f94434 "cpu/cpu.c",
funcname=0x76f942dc <__FUNCTION__.18096> "cpuGetSubDriver", linenr=linenr@entry=58, fmt=0x76f7e7e4 "%s") at util/virerror.c:1292
#2 0x76ed82d4 in cpuGetSubDriver (arch=<optimized out>) at cpu/cpu.c:57
#3 cpuGetSubDriver (arch=VIR_ARCH_NONE) at cpu/cpu.c:51
#4 0x76ed8818 in cpuDataFree (data=data@entry=0x70c22d78) at cpu/cpu.c:216
#5 0x716aaec0 in virQEMUCapsInitCPU (arch=VIR_ARCH_ARMV7L, caps=0x70c29a08) at qemu/qemu_capabilities.c:867
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The VIR_FREE() macro will cast away any const-ness. This masked a
number of places where we passed a 'const char *' string to
VIR_FREE. Fortunately in all of these cases, the variable was not
in fact const data, but a heap allocated string. Fix all the
variable declarations to reflect this.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
No need to open code now that we have a nice function.
Interestingly, our virStringFreeList function is typed correctly
(a malloc'd list of malloc'd strings is NOT const, whether at the
point where it is created, or at the point where it is cleand up),
so using it with a 'const char **' argument would require a cast
to keep the compiler. I chose instead to remove const from code
even where we don't modify the argument, just to avoid the need
to cast.
* src/qemu/qemu_command.h (qemuParseCommandLine): Drop declaration.
* src/qemu/qemu_command.c (qemuParseProcFileStrings)
(qemuStringToArgvEnv): Don't force malloc'd result to be const.
(qemuParseCommandLinePid, qemuParseCommandLineString): Simplify
cleanup.
(qemuParseCommandLine, qemuFindEnv): Drop const-correctness to
avoid the need to cast in callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
In commit 991270db99 I've used virDomainNetGetActualHostdev() to get
the actual hostdev from a network when removing the network from the
list to avoid leaving the hostdev in the list. I didn't notice that this
function doesn't check if the actual network is allocated and
dereferences it. This crashes the daemon when cleaning up a domain
object in early startup phases when the actual network definition isn't
allocated. When the actual definition isn't present, the hostdev that
might correspond to it won't be present anyways so it's safe to return
NULL.
Thanks to Cole Robinson for noticing this problem.
No need to check if privileged when reading hostsysinfo, since
that check was already done in libxlDriverShouldLoad(). The
libxl driver fails to load if not privileged.
