In a clean build system (Ubuntu 14.04), the viridentitytest failed to compile.
Even if all the SELINUX libraries and depedencies are installed. See the error
message below:
[...]
CC viridentitytest.o
CCLD viridentitytest
/usr/bin/ld: viridentitytest.o: undefined reference to symbol
'security_disable'
//lib/x86_64-linux-gnu/libselinux.so.1: error adding symbols: DSO missing
from command line
collect2: error: ld returned 1 exit status
make: *** [viridentitytest] Error 1
Simply adding the variable SELINUX_LIBS in viridentitytest rules of
Makefile.am to include SELINUX libraries into viridentitytest solved that
compilation issue.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
(cherry picked from commit f2a2d0e9ab89a50d9552d2c70de0301ad2b83224)
The documentation for the restore hook states that returning an empty
XML is equivalent with copying the input. There was a bug in the code
checking the returned string by checking the string instead of the
contents. Use the new helper to check if the string is empty.
(cherry picked from commit e38677993734e9af3dbd0589e1cecd0b75f7e757)
The helper checks whether a string contains only whitespace or is NULL.
This will be helpful to skip cases where a user string is optional, but
may be provided empty with the same meaning.
(cherry picked from commit 0eeafeedebe4469fce33d7942551957853856619)
Few places still used hardcoded limit for maximum XML size for commands
that accept XML files. The hardcoded limits ranged from 8k to 1M. Use
VSH_MAX_XML_FILE to express this limit in a unified way. This will bump
the limit for the commands that used hardcoded string lengths to 10M.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1152427
(cherry picked from commit 4d1852c48541a29e3c47caf0f2b801dfcb6579db)
https://bugzilla.redhat.com/show_bug.cgi?id=1141732
Introduced by commit id '8f76ad99' the logic to detach a scsi_host
device (SCSI or iSCSI) fails when attempting to remove the 'drive'
because as I found in my investigation - the DelDevice takes care of
that for us.
The investigation turned up commits to adjust the logic for the
qemuMonitorDelDevice and qemuMonitorDriveDel processing for interfaces
(commit id '81f76598'), disk bus=VIRTIO,SCSI,USB (commit id '0635785b'),
and chr devices (commit id '55b21f9b'), but nothing with the host devices.
This commit uses the model for the previous set of changes and applies
it to the hostdev path. The call to qemuDomainDetachHostSCSIDevice will
return to qemuDomainDetachThisHostDevice handling either the audit of
the failure or the wait for the removal and then call into
qemuDomainRemoveHostDevice for the event, removal from the domain hostdev
list, and audit of the removal similar to other paths.
NOTE: For now the 'conn' param to +qemuDomainDetachHostSCSIDevice is left
as ATTRIBUTE_UNUSED. Removing requires a cascade of other changes to be
left for a future patch.
(cherry picked from commit d2774e54cde2377c78a7572eb3fec0a663e5017f)
Commit 4882618ed13b469d92fa8b2b4a158fdb17dbe9f1 added the code that
requests driver cfg, but forgot to unref it.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
(cherry picked from commit 9661ac2f46eeb4690a25dfc48bdf9dc9a4dfe822)
Fix the build on FreeBSD, broken by commit 4882618.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit 99b2b4571d385eeffdc0ccbac426c66562e78933)
If we don't properly clean up all processes in the
machine-<vmname>.scope systemd won't remove the cgroup and subsequent vm
starts fail with
'CreateMachine: File exists'
Additional processes can e.g. be added via
echo $PID > /sys/fs/cgroup/systemd/machine.slice/machine-${VMNAME}.scope/tasks
but there are other cases like
http://bugs.debian.org/761521
Invoke TerminateMachine to be on the safe side since systemd tracks the
cgroup anyway. This is a noop if all processes have terminated already.
(cherry picked from commit 4882618ed13b469d92fa8b2b4a158fdb17dbe9f1)
Since commit 8eb55d782a2b9afacc7938694891cc6fad7b42a5 libxml2 removes
two slashes from the URI when there is no server part. This is fixed
with beb7281055dbf0ed4d041022a67c6c5cfd126f25, but only if the calling
application calls xmlSaveUri() on URI that xmlURIParse() parsed. And
that is not the case in virURIFormat(). virURIFormat() accepts
virURIPtr that can be created without parsing it and we do that when we
format network storage paths for gluster for example. Even though
virStorageSourceParseBackingURI() uses virURIParse(), it throws that data
structure right away.
Since we want to format URIs as URIs and not absolute URIs or opaque
URIs (see RFC 3986), we can specify that with a special hack thanks to
commit beb7281055dbf0ed4d041022a67c6c5cfd126f25, by setting port to -1.
This fixes qemuxml2argvtest test where the disk-drive-network-gluster
case was failing.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
(cherry picked from commit 8f17d0eaae7ee2fa3e214b79b188fc14ed5aa1eb)
https://bugzilla.redhat.com/show_bug.cgi?id=1147057
The code for relabelling the TAP FD is there due to a race. When
libvirt creates a /dev/tapN device it's labeled as
'system_u:object_r:device_t:s0' by default. Later, when
udev/systemd reacts to this device, it's relabelled to the
expected label 'system_u:object_r:tun_tap_device_t:s0'. Hence, we
have a code that relabels the device, to cut the race down. For
more info see ae368ebfcc4.
But the problem is, the relabel function is called on all TUN/TAP
devices. Yes, on /dev/net/tun too. This is however a special kind
of device - other processes uses it too. We shouldn't touch it's
label then.
Ideally, there would an API in SELinux that would label just the
passed FD and not the underlying path. That way, we wouldn't need
to care as we would be not labeling /dev/net/tun but the FD
passed to the domain. Unfortunately, there's no such API so we
have to workaround until then.
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
(cherry picked from commit ebc05263960f41065fa7d882959ea754b9281ab1)
virNetDevLinkDump() gets a message from netlink into "resp", then
calls nlmsg_parse() to fill the table "tb" with pointers into resp. It
then returns tb to its caller, but not before freeing the buffer at
resp. That means that all the callers of virNetDevLinkDump() are
examining memory that has already been freed. This can be verified by
filling the buffer at resp with garbage prior to freeing it (or, I
suppose, just running libvirtd under valgrind) then performing some
operation that calls virNetDevLinkDump().
The upstream commit log incorrectly states that the code has been like
this ever since virNetDevLinkDump() was written. In reality, the
problem was introduced with commit e95de74d, first in libvirt-1.0.5,
which was attempting to eliminate a typecast that caused compiler
warnings. It has only been pure luck (or maybe a lack of heavy load,
and/or maybe an allocation algorithm in malloc() that delays re-use of
just-freed memory) that has kept this from causing errors, for example
when configuring a PCI passthrough or macvtap passthrough network
interface.
The solution taken in this patch is the simplest - just return resp to
the caller along with tb, then have the caller free it after they are
finished using the data (pointers) in tb. I alternately could have
made a cleaner interface by creating a new struct that put tb and resp
together along with a vir*Free() function for it, but this function is
only used in a couple places, and I'm not sure there will be
additional new uses of virNetDevLinkDump(), so the value of adding a
new type, extra APIs, etc. is dubious.
(cherry picked from commit f9f9699f40729556238b905f67a7d6f68c084f6a)
Commit 28f8dfd (v1.0.0) introduced a security hole: in at least
the qemu implementation of virDomainGetXMLDesc, the use of the
flag VIR_DOMAIN_XML_MIGRATABLE (which is usable from a read-only
connection) triggers the implicit use of VIR_DOMAIN_XML_SECURE
prior to calling qemuDomainFormatXML. However, the use of
VIR_DOMAIN_XML_SECURE is supposed to be restricted to read-write
clients only. This patch treats the migratable flag as requiring
the same permissions, rather than analyzing what might break if
migratable xml no longer includes secret information.
Fortunately, the information leak is low-risk: all that is gated
by the VIR_DOMAIN_XML_SECURE flag is the VNC connection password;
but VNC passwords are already weak (FIPS forbids their use, and
on a non-FIPS machine, anyone stupid enough to trust a max-8-byte
password sent in plaintext over the network deserves what they
get). SPICE offers better security than VNC, and all other
secrets are properly protected by use of virSecret associations
rather than direct output in domain XML.
* src/remote/remote_protocol.x (REMOTE_PROC_DOMAIN_GET_XML_DESC):
Tighten rules on use of migratable flag.
* src/libvirt-domain.c (virDomainGetXMLDesc): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
(cherry picked from commit b1674ad5a97441b7e1bd5f5ebaff498ef2fbb11b)
Conflicts:
src/libvirt-domain.c - file split from older src/libvirt.c
Signed-off-by: Eric Blake <eblake@redhat.com>
virt-manager on Fedora sets up i686 hosts with "/usr/bin/qemu-kvm" emulator,
which in turn unconditionally execs qemu-system-x86_64 querying capabilities
then fails:
Error launching details: invalid argument: architecture from emulator 'x86_64' doesn't match given architecture 'i686'
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/engine.py", line 748, in _show_vm_helper
details = self._get_details_dialog(uri, vm.get_connkey())
File "/usr/share/virt-manager/virtManager/engine.py", line 726, in _get_details_dialog
obj = vmmDetails(conn.get_vm(connkey))
File "/usr/share/virt-manager/virtManager/details.py", line 399, in __init__
self.init_details()
File "/usr/share/virt-manager/virtManager/details.py", line 784, in init_details
domcaps = self.vm.get_domain_capabilities()
File "/usr/share/virt-manager/virtManager/domain.py", line 518, in get_domain_capabilities
self.get_xmlobj().os.machine, self.get_xmlobj().type)
File "/usr/lib/python2.7/site-packages/libvirt.py", line 3492, in getDomainCapabilities
if ret is None: raise libvirtError ('virConnectGetDomainCapabilities() failed', conn=self)
libvirtError: invalid argument: architecture from emulator 'x86_64' doesn't match given architecture 'i686'
Journal:
Oct 16 21:08:26 goatlord.localdomain libvirtd[1530]: invalid argument: architecture from emulator 'x86_64' doesn't match given architecture 'i686'
(cherry picked from commit afe8f4200f6e80d2510731165dd2cdae741bd9fb)
Right now when building the qemu command line, we try to do various
unconditional validations of the guest CPU against the host CPU. However
this checks are overly applied. The only time we should use the checks
are:
- The user requests host-model/host-passthrough, or
- When KVM is requsted. CPU features requested in TCG mode are always
emulated by qemu and are independent of the host CPU, so no host CPU
checks should be performed.
Right now if trying to specify a CPU for arm on an x86 host, it attempts
to do non-sensical validation and falls over.
Switch all the test cases that were intending to test CPU validation to
use KVM, so they continue to test the intended code.
Amend some aarch64 XML tests with a CPU model, to ensure things work
correctly.
(cherry picked from commit cf7fce8f2fd1c930f357fd4ff93ac35f38eb30c6)
Move the CPU mode/model handling to its own function. This is just
code movement and re-indentation.
(cherry picked from commit e1d872dc77c80d43036f928f83f560f2e9286148)
If you use public api virConnectListAllDomains() with second parameter
set to NULL to get only the number of domains you will lock out all
other operations with domains.
Introduced by commit 2c680804.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This removes the artificial and unnecessary restriction that
virDomainSetMaxDowntime() only be called while a migration is in
progress.
https://bugzilla.redhat.com/show_bug.cgi?id=1146618
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The current block stats code matched up the disk name with the actual
stats by the order in the data returned from qemu. This unfortunately
isn't right as qemu may return the disks in any order. Fix this by
returning a hash of stats and index them by the disk alias.
Commit de0aeaf filtered them out from the host-model features,
to allow host-model to be migratable by default.
Even though they are not passed to QEMU for host-passthrough,
(and not enabled by default) filter them out too
so the user does not think the domain has them.
https://bugzilla.redhat.com/show_bug.cgi?id=1147584
Commit fba6bc4 introduced the non-migratable invtsc feature,
breaking save/migration with host-model and host-passthrough.
On hosts with this feature present it was automatically included
in the CPU definition, regardless of QEMU support.
Commit de0aeaf stopped including it by default for host-model,
but failed to fix host-passthrough.
This commit ignores checking of CPU features with host-passthrough,
since we don't pass them to QEMU (only -cpu host is passed),
allowing domains using host-passthrough that were saved with
the broken version of libvirtd to be restored.
https://bugzilla.redhat.com/show_bug.cgi?id=1147584
According to our documentation logical pool supports formats 'auto' and
'lvm2'. However, in storage_conf.c we previously defined storage pool
formats: unknown, lvm2. Due to backward compatibility reasons
we must continue refer to pool format type 'unknown' instead of 'auto'.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1123767
Fix info in the command definition of allocpages, which is currently
pointing info for 'capabilities'.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
When virConnectDomainQemuMonitorEventRegister is called with the
VIR_CONNECT_DOMAIN_QEMU_MONITOR_EVENT_REGISTER_REGEX flag,
ignore the flag instead of crashing.
https://bugzilla.redhat.com/show_bug.cgi?id=1144920
For the new VIR_DOMAIN_EVENT_ID_TUNABLE event we have a bunch of
constants added
VIR_DOMAIN_EVENT_CPUTUNE_<blah>
VIR_DOMAIN_EVENT_BLKDEVIOTUNE_<blah>
This naming convention is bad for two reasons
- There is no common prefix unique for the events to both
relate them, and distinguish them from other event
constants
- The values associated with the constants were chosen
to match the names used with virConnectGetAllDomainStats
so having EVENT in the constant name is not applicable in
that respect
This patch proposes renaming the constants to
VIR_DOMAIN_TUNABLE_CPU_<blah>
VIR_DOMAIN_TUNABLE_BLKDEV_<blah>
ie, given them a common VIR_DOMAIN_TUNABLE prefix.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=993411
On some systems (using libtirpc instead of glibc's
implementation), xdr_uint64_t exists rather under different name:
xdr_u_int64_t. This makes compilation fail then:
libvirt_lxc-lxc_monitor_protocol.o: In function `xdr_virLXCMonitorInitEventMsg':
/usr/local/src/libvirt/libvirt-1.1.1/src/./lxc/lxc_monitor_protocol.c:31: undefined reference to `xdr_uint64_t'
Therefore we rather mirror the d707c866 commit and redefine
xdr_uint64_t if needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
On a domain startup, the variable store path is generated if needed.
The path is intended to be generated only once. However, the updated
domain definition is not saved into config dir rather than state XML
only. So later, whenever the domain is destroyed and the daemon is
restarted, the generated path is forgotten and the file may be left
behind on virDomainUndefine() call.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There's no one to free() it anyway. Instead, we can just pass the
provided array pointer directly.
==20039== 48 bytes in 4 blocks are definitely lost in loss record 658 of 787
==20039== at 0x4C2A700: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20039== by 0x4EA661F: virAllocN (viralloc.c:191)
==20039== by 0x50386EF: remoteNodeGetFreePages (remote_driver.c:7625)
==20039== by 0x5003504: virNodeGetFreePages (libvirt.c:21379)
==20039== by 0x154625: cmdFreepages (virsh-host.c:374)
==20039== by 0x12F718: vshCommandRun (virsh.c:1935)
==20039== by 0x1339FB: main (virsh.c:3747)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Since 363e9a68 we track backing chain metadata when creating snapshots
the right way even for the inactive configuration. As we did not yet
update other code paths that modify the backing chain (blockpull) the
newDef backing chain gets out of sync.
After stopping of a VM the new definition gets copied to the next start
one. The new VM then has incorrect backing chain info. This patch
switches the backing chain detector to always purge the existing backing
chain and forces re-detection to avoid this issue until we'll have full
backing chain tracking support.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1144922
Due to a missing check the API can be successfully called even if
the connection is ReadOnly. Fortunately, the API hasn't been
released yet, so there's no need for a CVE.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Add files parallels_sdk.c and parallels_sdk.h for code
which works with SDK, so libvirt's code will not mix with
dealing with parallels SDK.
To use Parallels SDK you must first call PrlApi_InitEx function,
and then you will be able to connect to a server with
PrlSrv_LoginLocalEx function. When you've done you must call
PrlApi_Deinit. So let's call PrlApi_InitEx on first .connectOpen,
count number of connections and deinitialize, when this counter
becomes zero.
Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
Executing prlctl command is not an optimal way to interact with
Parallels Cloud Server (PCS), it's better to use parallels SDK,
which is a remote API to paralles dispatcher service.
We prepared opensource version of this SDK and published it on
github, it's distributed under LGPL license. Here is a git repo:
https://github.com/Parallels/parallels-sdk.
To build with parallels SDK user should get compiler and linker
options from pkg-config 'parallels-sdk' file. So fix checks in
configure script and build with parallels SDK, if that pkg-config
file exists and add gcc options to makefile.
Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
We have these configuration knobs, like max_clients and
max_anonymous_clients. They limit the number of clients
connected. Whenever the limit is reached, the daemon stops
accepting new ones and resumes if one of the connected clients
disconnects. If that's the case, a debug message is printed into
the logs. And when the daemon starts over to accept new clients
too. However, the problem is the messages have debug priority.
This may be unfortunate, because if the daemon stops accepting
new clients all of a sudden, and users don't have debug logs
enabled they have no idea what's going on. Raise the messages
level to INFO at least.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The changes in commit c7542573 introduced possible segfault. Looking
deeper into the code and the original code before the patch series were
applied I think that we should report error for each function failure
and also we shouldn't call some of the function twice.
Found by coverity.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Use the universal tunable event to report changes to user. All
blkdeviotune values are prefixed with "blkdeviotune".
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When you updated some blkdeviotune values for running domain the values
were stored only internally, but not saved into the live XML so they
won't survive restarting the libvirtd.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The commit 1b854c76 introduced a new function 'virPolkitCheckAuth' and
in the #else section when you don't have polkit all attributes should be
follwed by ATTRIBUTE_UNUSED.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
It would be nice to also print a params pointer and number of params in
the debug message and the previous limit for number of params in the rpc
message was too large. The 2048 params will be enough for future events.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
A long time ago in a galaxy far, far away it has been decided
that libvirt will manage not only domains but host as well. And
with my latest work on qemu driver supporting huge pages, we miss
the cherry on top: an API to allocate huge pages on the run.
Currently users are forced to log into the host and adjust the
huge pages pool themselves. However, with this API the problem
is gone - they can both size up and size down the pool.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
