Use xmlFreeDoc instead of plain xmlFree.
4 bytes in 1 blocks are definitely lost in loss record 9 of 1,084
at 0x4C29F80: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
by 0x70730D6: xmlStrndup (in /usr/lib64/libxml2.so.2.9.2)
by 0x701E3DC: xmlNewDoc (in /usr/lib64/libxml2.so.2.9.2)
by 0x70C39F8: xmlSAX2StartDocument (in /usr/lib64/libxml2.so.2.9.2)
by 0x7017245: xmlParseDocument (in /usr/lib64/libxml2.so.2.9.2)
by 0x7017606: xmlDoRead (in /usr/lib64/libxml2.so.2.9.2)
by 0x5309DAD: virXMLParseHelper (virxml.c:742)
by 0x5367584: virStoragePoolLoadState (storage_conf.c:1863)
It's not a problem at all and causes virt-manager to break down.
Note: netcf 0.2.8 and earlier generates invalid XML for a bond with no
interfaces anyway, so in that case this error in libvirt is never
reached since we fail earlier.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
If the redirfilter has no usbdev sub-elements, then do not format anything
rather than formatting an empty pair of elements:
<redirfilter>
</redirfilter>
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Commit id '73eda710' added virDomainKeyWrapDefParseXML which uses
virXPathNodeSet, but does not handle a -1 return thus causing a possible
loop condition exit problem later when the return value is used.
Change the logic to return the value from virXPathNodeSet if <= 0
The XML parser sets a default <mode> if none is explicitly passed in.
This is then used at pool/vol creation time, and unconditionally reported
in the XML.
The problem with this approach is that it's impossible for other code
to determine if the user explicitly requested a storage mode. There
are some cases where we want to make this distinction, but we currently
can't.
Handle <mode> parsing like we handle <owner>/<group>: if no value is
passed in, set it to -1, and adjust the internal consumers to handle
it.
https://bugzilla.redhat.com/show_bug.cgi?id=998813
Like usb-serial, the pci-serial device allows a serial device to be
attached to PCI bus. An example XML looks like this:
<serial type='dev'>
<source path='/dev/ttyS2'/>
<target type='pci-serial' port='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</serial>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Sometimes the only thing we need is the pointer to virDomainDiskDef and
having to call virDomainDiskIndexBy* APIs, storing the disk index, and
looking it up in the disks array is ugly. After this patch, we can just
call virDomainDiskBy* and get the pointer in one step.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
After parsing the memory device XML the function would not restore the
XML parser context causing invalid XPath starting point for the rest of
the elements. This is a regression since 3e4230d2.
The test case addition uses the <idmap> element that is currently unused
by qemu, but parsed after the memory device definition and formatted
always.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1223631
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
virDomainParseMemory parses the size and then rounds up while converting
it to kibibytes. Since the number is limit-checked before the rounding
it's possible to use a number that would be correctly parsed the first
time, but not the second time. For numbers not limited to 32 bit systems
the magic is 9223372036854775807 bytes. That number then can't be parsed
back in kibibytes.
To solve the issue add a second overflow check for the few values that
would cause the problem. Since virDomainParseMemory is used in config
parsing, this avoids vanishing VMs.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1221504
So far, we are not reporting if numatune was even defined. The
value of zero is blindly returned (which maps onto
VIR_DOMAIN_NUMATUNE_MEM_STRICT). Unfortunately, we are making
decisions based on this value. Instead, we should not only return
the correct value, but report to the caller if the value is valid
at all.
For better viewing of this patch use '-w'.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=976387
For a domain configured using the host cdrom, we should taint the domain
due to problems encountered when the host and guest try to control the tray.
For some reason a union (_virNodeDevCapData) that had only been
declared inside the toplevel struct virNodeDevCapsDef was being used
as an argument to functions all over the place. Since it was only a
union, the "type" attribute wasn't necessarily sent with it. While
this works, it just seems wrong.
This patch creates a toplevel typedef for virNodeDevCapData and
virNodeDevCapDataPtr, making it a struct that has the type attribute
as a member, along with an anonymous union of everything that used to
be in union _virNodeDevCapData. This way we only have to change the
following:
s/union _virNodeDevCapData */virNodeDevCapDataPtr /
and
s/caps->type/caps->data.type/
This will make me feel less guilty when adding functions that need a
pointer to one of these.
Two new domain configuration XML elements are added to enable/disable
the protected key management operations for a guest:
<domain>
...
<keywrap>
<cipher name='aes|dea' state='on|off'/>
</keywrap>
...
</domain>
Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Signed-off-by: Daniel Hansel <daniel.hansel@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Because there are multiple potential reasons for an error, this
function logs any errors before returning NULL (since the caller won't
have the information needed to determine which was the reason for
failure).
The APIs take the memory value in KiB and we store it in KiB
internally, but we cannot parse the whole ULONG_MAX range
on 64-bit systems, because virDomainParseScaledValue
needs to fit the value in bytes in an unsigned long long.
https://bugzilla.redhat.com/show_bug.cgi?id=1176739
Since 'autofill'd iothreadid entries are not written during XML format
processing, it is possible that if an iothreadid in the middle of an
autofilled list would then change it's id on a subsequent restart.
Thus during the iothreadid deletion, if we determine the delete is not
the "last" thread, then clear the autofill bit for all iothreadid's
following the one being deleted (either the first or one in the middle).
This way, iothreadid's will be printed/saved.
https://bugzilla.redhat.com/show_bug.cgi?id=1171984https://bugzilla.redhat.com/show_bug.cgi?id=1188463
Remove the check for the source host name for iSCSI source XML processing
declaring duplicate sources when the source device path and if present the
initiator of a proposed storage pool matches an existing storage pool.
The backend iSCSI storage driver uses 'iscsiadm --mode session' to query
available iscsid target sessions. The output displayed is the IP address
and the IQN (target path) of known targets. The displayed IP address
is a resolved address based on the session --login. Additionally, iscsid
keeps track of the various ways to define the host name (IPv4 Address,
IPv6 Address, /etc/hosts, etc.) for that IQN (see output of an 'iscsiadm
--mode node'). If an incoming IQN matches and the host name provided by
libvirt is resolved to the existing IQN, then iscsid will "reuse" the
session. Although libvirt could do the same name resolution, if there
is a difference, iscsid could still declare two seemingly different sources
to be the same and not create a new session which means libvirt now has
two storage pools looking at the same source. Thus to avoid any strange
host name resolution issues, just rely on iscsid for that and do not
allow multiple pools on the same host to use the same device path (IQN).
Only perform the port number check if the incoming definition actually
provides it. Since the port number is optional we could erroneously pass
a duplicate source host check since some storage pool backends which fill
in the default port number (e.g., iSCSI and sheepdog) for the started pool.
There is a lot of places, were it's pretty easy for user to enter some
characters that we need to escape to create a valid XML description.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1197580
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1220265
Passing the return value to an enum directly is not safe. Fix this by
comparing the true integer result of virTristateSwitchTypeFromString().
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Specifying a balloon size more than the memory size of a guest isn't
something that should be rejected when parsing the XML. Truncate the
size to the maximum memory size.
Until now the virDomainListAllDomains API would lock the domain list and
then every single domain object to access and filter it. This would
potentially allow a unresponsive VM to block the whole daemon if a
*listAllDomains call would get stuck.
To avoid this problem this patch collects a list of referenced domain
objects first from the list and then unlocks it right away. The
expensive operation requiring locking of the domain object is executed
after the list lock is dropped. While a single blocked domain will still
lock up a listAllDomains call, the domain list won't be held locked and
thus other APIs won't be blocked.
Additionally this patch also fixes the lookup code, where we'd ignore
the vm->removing flag and thus potentially return domain objects that
would be deleted very soon so calling any API wouldn't make sense.
As other clients also could benefit from operating on a list of domain
objects rather than the public domain descriptors a new intermediate
API - virDomainObjListCollect - is introduced by this patch.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1181074
Extend it to a universal helper used for clearing lists of any objects.
Note that the argument type is specifically void * to allow implicit
typecasting.
Additionally add a helper that works on non-NULL terminated arrays once
we know the length.
My commit 747761a79 (v1.2.15 only) dropped this bit of logic when filling
in a default arch in the XML:
- /* First try to find one matching host arch */
- for (i = 0; i < caps->nguests; i++) {
- if (caps->guests[i]->ostype == ostype) {
- for (j = 0; j < caps->guests[i]->arch.ndomains; j++) {
- if (caps->guests[i]->arch.domains[j]->type == domain &&
- caps->guests[i]->arch.id == caps->host.arch)
- return caps->guests[i]->arch.id;
- }
- }
- }
That attempt to match host.arch is important, otherwise we end up
defaulting to i686 on x86_64 host for KVM, which is not intended.
Duplicate it in the centralized CapsLookup function.
Additionally add some testcases that would have caught this.
https://bugzilla.redhat.com/show_bug.cgi?id=1219191
https://bugzilla.redhat.com/show_bug.cgi?id=1176020
We had a check for the vcpu count total number in <numa>
before, however this check is not good enough. There are
some examples:
1. one of cpu id is out of maxvcpus, can set success(cpu count = 5 < 10):
<vcpu placement='static'>10</vcpu>
<cell id='0' cpus='0-3,100' memory='512000' unit='KiB'/>
2. use the same cpu in 2 cell, can set success(cpu count = 8 < 10):
<vcpu placement='static'>10</vcpu>
<cell id='0' cpus='0-3' memory='512000' unit='KiB'/>
<cell id='1' cpus='0-3' memory='512000' unit='KiB'/>
3. use the same cpu in 2 cell, cannot set success(cpu count = 11 > 10):
<vcpu placement='static'>10</vcpu>
<cell id='0' cpus='0-6' memory='512000' unit='KiB'/>
<cell id='1' cpus='0-3' memory='512000' unit='KiB'/>
Add a check for numa cpus, check if duplicate use one cpu in more
than one cell.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Some platforms, like aarch64, don't have APIC but GIC. So there's
no reason to have <apic/> feature turned on. However, we are
still missing <gic/> feature. This commit introduces the feature
to XML parser and formatter, adds documentation and updates RNG
schema.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The phyp driver stuffed it into a DomainDefPtr during its attachdevice
routine, but the value is never advertised via capabilities so it should
be safe to drop.
Have the phyp driver use OSTYPE_LINUX, which is what it advertises via
capabilities.
Build with clang fails with:
CC conf/libvirt_conf_la-domain_conf.lo
conf/domain_conf.c:13377:9: error: variable 'cpumask' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
if (!(tmp = virXMLPropString(node, "cpuset"))) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
and many other similar errors regarding the 'cpuset' variable.
Fix by explicitly initializing it with NULL.
If someone has updated a network to change its bridge name, but the
network is still active (so that bridge name hasn't taken effect yet),
we still want to disallow another network from taking that new name.
We already check that any auto-assigned bridge device name for a
virtual network (e.g. "virbr1") doesn't conflict with the bridge name
for any existing libvirt network (via virNetworkSetBridgeName() in
conf/network_conf.c).
We also want to check that the name doesn't conflict with any bridge
device created on the host system outside the control of libvirt
(history: possibly due to the ploriferation of references to libvirt's
bridge devices in HOWTO documents all around the web, it is not
uncommon for an admin to manually create a bridge in their host's
system network config and name it "virbrX"). To add such a check to
virNetworkBridgeInUse() (which is called by virNetworkSetBridgeName())
we would have to call virNetDevExists() (from util/virnetdev.c); this
function calls ioctl(SIOCGIFFLAGS), which everyone on the mailing list
agreed should not be done from an XML parsing function in the conf
directory.
To remedy that problem, this patch removes virNetworkSetBridgeName()
from conf/network_conf.c and puts an identically functioning
networkBridgeNameValidate() in network/bridge_driver.c (because it's
reasonable for the bridge driver to call virNetDevExists(), although
we don't do that yet because I wanted this patch to have as close to 0
effect on function as possible).
There are a couple of inevitable changes though:
1) We no longer check the bridge name during
virNetworkLoadConfig(). Close examination of the code shows that
this wasn't necessary anyway - the only *correct* way to get XML
into the config files is via networkDefine(), and networkDefine()
will always call networkValidate(), which previously called
virNetworkSetBridgeName() (and now calls
networkBridgeNameValidate()). This means that the only way the
bridge name can be unset during virNetworkLoadConfig() is if
someone edited the config file on disk by hand (which we explicitly
prohibit).
2) Just on the off chance that somebody *has* edited the file by hand,
rather than crashing when they try to start their malformed
network, a check for non-NULL bridge name has been added to
networkStartNetworkVirtual().
(For those wondering why I don't instead call
networkValidateBridgeName() there to set a bridge name if one
wasn't present - the problem is that during
networkStartNetworkVirtual(), the lock for the network being
started has already been acquired, but the lock for the network
list itself *has not* (because we aren't adding/removing a
network). But virNetworkBridgeInuse() iterates through *all*
networks (including this one) and locks each network as it is
checked for a duplicate entry; it is necessary to lock each network
even before checking if it is the designated "skip" network because
otherwise some other thread might acquire the list lock and delete
the very entry we're examining. In the end, permitting a setting of
the bridge name during network start would require that we lock the
entire network list during any networkStartNetwork(), which
eliminates a *lot* of parallelism that we've worked so hard to
achieve (it can make a huge difference during libvirtd startup). So
rather than try to adjust for someone playing against the rules, I
choose to instead give them the error they deserve.)
3) virNetworkAllocateBridge() (now removed) would leak any "template"
string set as the bridge name. Its replacement
networkFindUnusedBridgeName() doesn't leak the template string - it
is properly freed.
Add qemuDomainAddIOThread and qemuDomainDelIOThread in order to add or
remove an IOThread to/from the host either for live or config optoins
The implementation for the 'live' option will use the iothreadpids list
in order to make decision, while the 'config' option will use the
iothreadids list. Additionally, for deletion each may have to adjust
the iothreadpin list.
IOThreads are implemented by qmp objects, the code makes use of the existing
qemuMonitorAddObject or qemuMonitorDelObject APIs.
Signed-off-by: John Ferlan <jferlan@redhat.com>
We're about to allow IOThreads to be deleted, but an iothreadid may be
included in some domain thread sched, so add a new API to allow removing
an iothread from some entry.
Then during the writing of the threadsched data and an additional check
to determine whether the bitmap is all clear before writing it out.
With iothreadid's allowing any 'id' value for an iothread_id, the
iothreadsched code needs a slight adjustment to allow for "any"
unsigned int value in order to create the bitmap of ids that will
have scheduler adjustments. Adjusted the doc description as well.
Remove the iothreadspin array from cputune and replace with a cpumask
to be stored in the iothreadids list.
Adjust the test output because our printing goes in order of the iothreadids
list now.
Since it's only ever referenced in domain_conf.c, make the function
static, but also will need to move it to somewhere before it's referenced
rather than forward referencing it.
Add 'thread_id' to the virDomainIOThreadIDDef as a means to store the
'thread_id' as returned from the live qemu monitor data.
Remove the iothreadpids list from _qemuDomainObjPrivate and replace with
the new iothreadids 'thread_id' element.
Rather than use the default numbering scheme of 1..number of iothreads
defined for the domain, use the iothreadid's list for the iothread_id
Since iothreadids list keeps track of the iothread_id's, these are
now used in place of the many places where a for loop would "know"
that the ID was "+ 1" from the array element.
The new tests ensure usage of the <iothreadid> values for an exact number
of iothreads and the usage of a smaller number of <iothreadid> values than
iothreads that exist (and usage of the default numbering scheme).
