CVE-2013-6458
Generally, every API that is going to begin a job should do that before
fetching data from vm->def. However, qemuDomainGetBlockInfo does not
know whether it will have to start a job or not before checking vm->def.
To avoid using disk alias that might have been freed while we were
waiting for a job, we use its copy. In case the disk was removed in the
meantime, we will fail with "cannot find statistics for device '...'"
error message.
CVE-2013-6458
https://bugzilla.redhat.com/show_bug.cgi?id=1043069
When virDomainDetachDeviceFlags is called concurrently to
virDomainBlockStats: libvirtd may crash because qemuDomainBlockStats
finds a disk in vm->def before getting a job on a domain and uses the
disk pointer after getting the job. However, the domain in unlocked
while waiting on a job condition and thus data behind the disk pointer
may disappear. This happens when thread 1 runs
virDomainDetachDeviceFlags and enters monitor to actually remove the
disk. Then another thread starts running virDomainBlockStats, finds the
disk in vm->def, and while it's waiting on the job condition (owned by
the first thread), the first thread finishes the disk removal. When the
second thread gets the job, the memory pointed to be the disk pointer is
already gone.
That said, every API that is going to begin a job should do that before
fetching data from vm->def.
This patch fixes a segmentation fault when creating new virtual machines using QEMU.
The segmentation fault is caused by commit f41830680e
and commit cbb6ec42e2.
In virQEMUCapsProbeQMPMachineTypes, when copying machines to qemuCaps, "none" is skipped.
Therefore, the value of i and "qemuCaps->nmachineTypes - 1" do not always match.
However, defIdx value (used to call virQEMUCapsSetDefaultMachine) is set using the value in i
when the array elements are in qemuCaps->nmachineTypes - 1.
So, when libvirt tries to create virtual machines using the default machine type,
qemuCaps->machineTypes[defIdx] is accessed and since the defIdx is NULL, it results in segmentation fault.
Signed-off-by: Yudai Yamagishi <yummy@sfc.wide.ad.jp>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Cleanup after commit db3dd08 removed all clients outside of
the .h file.
* src/datatypes.h (VIR_IS_CONNECT): Delete, and inline into all
callers, since no other file uses it any more.
Signed-off-by: Eric Blake <eblake@redhat.com>
Ever since their introduction (commit 1509b80 in v0.5.0 for
virConnectDomainEventRegister, commit 4445723 in v0.8.0 for
virConnectDomainEventDeregisterAny), the event deregistration
functions have been documented as returning 0 on success;
likewise for older registration (only the newer RegisterAny
must return a non-zero callbackID). And now that we are
adding virConnectNetworkEventDeregisterAny for v1.2.1, it
should have the same semantics.
Fortunately, all of the stateful drivers have been obeying
the docs and returning 0, thanks to the way the remote_driver
tracks things (in fact, the RPC wire protocol is unable to
send a return value for DomainEventRegisterAny, at least not
without adding a new RPC number). Well, except for vbox,
which was always failing deregistration, due to failure to
set the return value to anything besides its initial -1.
But for local drivers, such as test:///default, we've been
returning non-zero numbers; worse, the non-zero numbers have
differed over time. For example, in Fedora 12 (libvirt 0.8.2),
calling Register twice would return 0 and 1 [the callbackID
generated under the hood]; while in Fedora 20 (libvirt 1.1.3),
it returns 1 and 2 [the number of callbacks registered for
that event type]. Since we have changed the behavior over
time, and since it differs by local vs. remote, we can safely
argue that no one could have been reasonably relying on any
particular behavior, so we might as well obey the docs, as well
as prepare callers that might deal with older clients to not be
surprised if the docs are not strictly followed.
For consistency, this patch fixes the code for all drivers,
even though it only makes an impact for vbox and for local
drivers. By fixing all drivers, future copy and paste from
a remote driver to a local driver is less likely to
reintroduce the bug.
Finally, update the testsuite to gain some coverage of the
issue for local drivers, including the first test of old-style
domain event registration via function pointer instead of
event id.
* src/libvirt.c (virConnectDomainEventRegister)
(virConnectDomainEventDeregister)
(virConnectDomainEventDeregisterAny): Clarify docs.
* src/libxl/libxl_driver.c (libxlConnectDomainEventRegister)
(libxlConnectDomainEventDeregister)
(libxlConnectDomainEventDeregisterAny): Match documentation.
* src/lxc/lxc_driver.c (lxcConnectDomainEventRegister)
(lxcConnectDomainEventDeregister)
(lxcConnectDomainEventDeregisterAny): Likewise.
* src/test/test_driver.c (testConnectDomainEventRegister)
(testConnectDomainEventDeregister)
(testConnectDomainEventDeregisterAny)
(testConnectNetworkEventDeregisterAny): Likewise.
* src/uml/uml_driver.c (umlConnectDomainEventRegister)
(umlConnectDomainEventDeregister)
(umlConnectDomainEventDeregisterAny): Likewise.
* src/vbox/vbox_tmpl.c (vboxConnectDomainEventRegister)
(vboxConnectDomainEventDeregister)
(vboxConnectDomainEventDeregisterAny): Likewise.
* src/xen/xen_driver.c (xenUnifiedConnectDomainEventRegister)
(xenUnifiedConnectDomainEventDeregister)
(xenUnifiedConnectDomainEventDeregisterAny): Likewise.
* src/network/bridge_driver.c
(networkConnectNetworkEventDeregisterAny): Likewise.
* tests/objecteventtest.c (testDomainCreateXMLOld): New test.
(mymain): Run it.
(testDomainCreateXML): Check return values.
Signed-off-by: Eric Blake <eblake@redhat.com>
Currently, the qemuProcessStop tries to open the domain log file
and saves the original error afterwards. Then all the cleanup is
done after which the error is restored back. This has however one
flaw: if opening of the log file fails an error is reported,
which results in previous error being overwritten (the useful
one, e.g. "PCI device XXXX:XXXX could not be found"). Hence, user
sees something like:
error: failed to create logfile /var/log/libvirt/qemu/ovirt_usb.log: No such file or directory
instead of:
error: internal error: Did not find USB device 8644:8003
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reported-by: Zhou Yimin <zhouyimin@huawei.com>
@listenAddress and @cookiein arguments, should be exchanged,
because the order of the caller and the callee does not match.
This results in the listen address being ignored for peer-to-peer
migration and the cookie being ignored for v2 migration.
Introduced by c4ac7ef (v1.1.4-rc1~141).
https://bugzilla.redhat.com/show_bug.cgi?id=1049338
Signed-off-by: Minoru Usui <usui@mxm.nes.nec.co.jp>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The libvirt_internal.h header was included by the internal.h header.
This made it painful to add new stuff to the header file that would
require some more specific types. Remove inclusion by internal.h and add
it to appropriate places manually.
The datatype.c object checks could result in a message like:
error: invalid connection pointer in no connection
This consolidates all clients of this message to have uniform contents:
error: invalid connection pointer in someFunc
Note that virCheckConnectReturn raises an error immediately; in
datatypes.c, where we don't need to raise the error (but instead
just leave it in the thread-local setting), we use
virCheckConnectGoto and the cleanup label instead. Then, for
consistency in that file, all subsequent error messages are
touched to also use the cleanup error label.
* src/datatypes.h (virCheckConnectReturn)
(virCheckConnectGoto): New macros.
* src/datatypes.c: Use new macro.
* src/libvirt-qemu.c (virDomainQemuAttach): Likewise.
(virLibConnError): Delete unused macro.
* src/libvirt-lxc.c (virLibConnError): Likewise.
* src/libvirt.c: Use new macro throughout.
* docs/api_extension.html.in: Modernize documentation.
Signed-off-by: Eric Blake <eblake@redhat.com>
As pointed out by the Xen folks [1], HVM nics should always be set
to type LIBXL_NIC_TYPE_VIF_IOEMU unless the user explicity requests
LIBXL_NIC_TYPE_VIF via model='netfront'. The current logic in
libxlMakeNic() only sets the nictype to LIBXL_NIC_TYPE_VIF_IOEMU if
a model is specified that is not 'netfront', which breaks PXE booting
configurations where no model is specified (i.e. use the hypervisor
default).
Reported-by: Stefan Bader <stefan.bader@canonical.com>
[1] https://www.redhat.com/archives/libvir-list/2013-December/msg01156.html
This reverts commit aa4619337c.
This patch was accidentally pushed prematurely, and has incorrect
logic for which shutdown methods to attempt.
Signed-off-by: Eric Blake <eblake@redhat.com>
Pavel Hrdina reported to me off-list that my gnulib update on
Jan 1 broke the build on RHEL 6.4 (autoconf 2.63) and older:
executing aclocal -I glm4
glm4/gl-openssl.m4:11: error: m4_defn: undefined macro: _m4_divert_diversion
glm4/gl-openssl.m4:11: the top level
autom4te: /usr/bin/m4 failed with exit status: 1
aclocal: autom4te failed with exit status: 1
It took me a while, but I fixed the regression in gnulib.
* gnulib: Update to latest, for build fixes.
Signed-off-by: Eric Blake <eblake@redhat.com>
AArch64 qemu has similar behavior as armv7l, like use of mmio etc.
This patch adds similar bypass checks what we have for armv7l to aarch64.
E.g. we are enabling mmio transport for Nicdev.
Making addDefaultUSB and addDefaultMemballoon to false etc.
V3:
- Adding missing domain rng schema for aarcg64 and test case in
testutilsqemu.c which was causing test suite failure
while running make check.
V2:
- Added testcase to qemuxml2argvtest as suggested
during review comments of V1.
V1:
- Initial patch.
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Some of our operation denied messages are outright stupid; for
example, if virIdentitySetAttr fails:
error: operation Identity attribute is already set forbidden for read only access
This patch fixes things to a saner:
error: operation forbidden: Identity attribute is already set
It also consolidates the most common usage pattern for operation
denied errors: read-only connections preventing a public API. In
this case, 'virsh -r -c test:///default destroy test' changes from:
error: operation virDomainDestroy forbidden for read only access
to:
error: operation forbidden: read only access prevents virDomainDestroy
Note that we were previously inconsistent on which APIs used
VIR_FROM_DOM (such as virDomainDestroy) vs. VIR_FROM_NONE (such as
virDomainPMSuspendForDuration). After this patch, all uses
consistently use VIR_FROM_NONE, on the grounds that it is unlikely
that a caller learning that a call is denied can do anything in
particular with extra knowledge which error domain the call belongs
to (similar to what we did in commit baa7244).
* src/util/virerror.c (virErrorMsg): Rework OPERATION_DENIED error
message.
* src/internal.h (virCheckReadOnlyGoto): New macro.
* src/util/virerror.h (virReportRestrictedError): New macro.
* src/libvirt-lxc.c: Use new macros.
* src/libvirt-qemu.c: Likewise.
* src/libvirt.c: Likewise.
* src/locking/lock_daemon.c (virLockDaemonClientNew): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1047234
Add a range check for supported numa memory placement modes provided by
the user before setting them in the domain definition. Without the check
the user is able to provide a (yet) unknown mode which is then stored in
the domain definition. This potentially causes a NULL dereference when
the defintion is formatted into the XML.
To reproduce run:
virsh numatune DOMNAME --mode 6 --nodeset 0
The XML will then contain:
<numatune>
<memory mode='(null)' nodeset='0'/>
</numatune>
With this fix, the command fails:
error: Unable to change numa parameters
error: invalid argument: unsupported numa_mode: '6'
Add whitespace to separate logical code blocks, reformat error messages
and clean up code flow.
This patch changes error handling in some cases where the the loop would
be continued to jump to cleanup instead and error out rather than modify
the domain any further.
We might as well take advantage of viralloc.h instead of open-coding
array management ourselves. While at it, I simplified several
places that were doing repetitive pointer chasing to use an
intermediate variable for legibility (some other places remain,
but they will disapper in later refactoring patches).
* src/conf/object_event_private.h (_virObjectEventCallbackList):
Use size_t for count.
* src/conf/object_event.c (_virObjectEventQueue): Likewise.
(virObjectEventCallbackListRemoveID): Use VIR_DELETE_ELEMENT.
(virObjectEventQueuePush, virObjectEventCallbackListAddID): Use
VIR_APPEND_ELEMENT.
(virObjectEventCallbackListEventID)
(virObjectEventStateDispatchCallbacks): Simplify code.
Signed-off-by: Eric Blake <eblake@redhat.com>
No need to use an int that only ever stores 0 and 1.
* src/conf/object_event_private.h (_virObjectEventCallback):
Change deleted to bool.
* src/conf/object_event.c (virObjectEventDispatchMatchCallback):
Switch return type to bool.
(virObjectEventCallbackListMarkDeleteID): Update client.
* src/conf/domain_event.c (virDomainEventCallbackListMarkDelete):
Likewise.
Do not leave the PCI address of the primary video card set
to the legacy default (0000:00:02.0) if we're doing two-pass
allocation.
Since QEMU 1.6 (QEMU_CAPS_VIDEO_PRIMARY) we allow the primary
video card to be on other slots than 0000:00:02.0 (as we use
-device instead of -vga).
However we fail to assign it an address if:
* another device explicitly uses 0000:00:02.0 and
* the primary video device has no address specified
On the first pass, we have set the address to default, then checked
if it's available, leaving it set even if it wasn't. This address
got picked up by the second pass, resulting in a conflict:
XML error: Attempted double use of PCI slot 0000:00:02.0
(may need "multifunction='on'" for device on function 0)
Also fix the test that was supposed to catch this.
We weren't very consistent in our use of VIR_ERR_NO_SUPPORT; many
users just passed __FUNCTION__ on, while others passed "%s" to
silence over-eager compilers that warn about __FUNCTION__ not
containing any %. It's nicer to route all these uses through
a single macro, so that if we ever need to change the reporting,
we can do it in one place.
I verified that 'virsh -c test:///default qemu-monitor-command test foo'
gives the same error message before and after this patch:
error: this function is not supported by the connection driver: virDomainQemuMonitorCommand
Note that in libvirt.c, we were inconsistent on whether virDomain*
API used virLibConnError() (with VIR_FROM_NONE) or virLibDomainError()
(with VIR_FROM_DOMAIN); this patch unifies these errors to all use
VIR_FROM_NONE, on the grounds that it is unlikely that a caller
learning that a call is unimplemented can do anything in particular
with extra knowledge of which error domain it belongs to.
One particular change to note is virDomainOpenGraphics which was
trying to fail with VIR_ERR_NO_SUPPORT after a failed
VIR_DRV_SUPPORTS_FEATURE check; all other places that fail a
feature check report VIR_ERR_ARGUMENT_UNSUPPORTED.
* src/util/virerror.h (virReportUnsupportedError): New macro.
* src/libvirt-qemu.c: Use new macro.
* src/libvirt-lxc.c: Likewise.
* src/lxc/lxc_driver.c: Likewise.
* src/security/security_manager.c: Likewise.
* src/util/virinitctl.c: Likewise.
* src/libvirt.c: Likewise.
(virDomainOpenGraphics): Use correct error for unsupported feature.
Signed-off-by: Eric Blake <eblake@redhat.com>
Having one API call into another is generally not good; among
other issues, it gives confusing logs, and is not quite as
efficient.
This fixes several instances, but not all: we still have instances
in both libvirt.c and in backend hypervisors (lxc and qemu) calling
the public virTypedParamsGetString and friends, which dispatch
errors immediately. I'm not sure if it is worth trying to clean
that up in a separate patch (such a cleanup may be easiest by
separating the public function into a wrapper around the internal,
then tweaking internal.h so that internal users directly use the
internal function).
* src/libvirt.c (virDomainGetUUIDString, virNetworkGetUUIDString)
(virStoragePoolGetUUIDString, virSecretGetUUIDString)
(virNWFilterGetUUIDString): Avoid nested public API call.
* src/util/virtypedparam.c (virTypedParamsReplaceString): Don't
dispatch errors here.
(virTypedParamsGet): No need to reset errors.
(virTypedParamsGetBoolean): Use consistent ordering.
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1036248
Incorrect usage of virAsprintf. vmware-vmx reports version
information to stderr, at least for OS X 10.9.1.
Signed-off-by: Eric Blake <eblake@redhat.com>
Any file with access to object_event_private.h also has access to
the internals of virObjectEvent, without needing an accessor
function. Not to mention the accessor function was doing type
checks that would always succeed.
* src/conf/object_event_private.h (virObjectEventGetEventID): Drop.
* src/conf/object_event.c (virObjectEventGetEventID): Drop.
(virObjectEventDispatchMatchCallback): Simplify caller.
* src/conf/domain_event.c (virDomainEventDispatchDefaultFunc):
Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
While working on events, I found a number of minor issues; I'm
hoisting these to the front rather than doing it piecemeal in
the patches where I first noticed bad or missing documentation.
* src/conf/object_event.c: Fix grammar, document all parameters
of public functions, wrap some long lines.
* src/conf/object_event.h: Likewise.
* src/conf/network_event.c: Likewise.
* src/conf/domain_event.c: Likewise (except for the large number
of event creation functions).
* src/libvirt_private.cyms (conf/object_event.h): Split...
(conf/network_event.h): ...to account for new file.
Signed-off-by: Eric Blake <eblake@redhat.com>
We document that calling any public API wipes out all prior
libvirt errors in the same thread; but weren't obeying this
style in a few functions.
There are a couple of nested uses of virConnectRef (in lxc
and qemu reboot paths), but they should not be affected by
this change in semantics since there should not be any
previous error getting nuked (a later patch will clean up
the nested calls, along with abuse of virConnectClose on
cleanup paths which DOES nuke errors).
* src/libvirt.c (virGetVersion, virConnectRef, virDomainRef)
(virDomainGetSecurityLabel, virDomainGetSecurityLabelList)
(virDomainSetMetadata, virDomainGetMetadata)
(virNodeGetSecurityModel, virNetworkRef, virInterfaceRef)
(virStoragePoolRef, virStorageVolRef, virNodeDeviceGetName)
(virNodeDeviceRef, virSecretRef, virStreamRef, virNWFilterRef)
(virDomainSnapshotRef): Reset error on entrance.
(do_open): Drop redundant error reset.
* src/libvirt-qemu.c (virDomainQemuAgentCommand): Likewise.
* src/libvirt-lxc.c (virDomainLxcEnterNamespace)
(virDomainLxcEnterSecurityLabel): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
While auditing error messages in libvirt.c, I found a couple
instances that had not been converted to modern error styles,
and a few places that failed to dispatch the error through
the known-good connection.
* src/libvirt.c (virDomainPinEmulator, virDomainGetDiskErrors)
(virDomainSendKey, virDomainGetSecurityLabelList)
(virDomainGetEmulatorPinInfo): Use typical error reporting.
(virConnectGetCPUModelNames, virConnectRegisterCloseCallback)
(virConnectUnregisterCloseCallback, virDomainGetUUID): Report
error through connection.
Signed-off-by: Eric Blake <eblake@redhat.com>
Style only. In particular, the message on "flags 'affect live'
and 'affect config'" being mutually exclusive was already split
in some instances.
* src/libvirt.c: Wrap some long error messages to fit in 80 columns.
Signed-off-by: Eric Blake <eblake@redhat.com>
Most of our public APIs emit a debug log on entry, prior to anything
else. There were a few exceptions where obvious failures were not
logged, so fix those. When moving a debug earlier, this patch also
makes sure to avoid any NULL dereference during the log (the APIs
are supposed to gracefully fail if the user passes NULL for the object).
However, do NOT use VIR_DEBUG prior to virInitialize, since setting
up the error reporting can change where VIR_DEBUG output would be
routed. Instead add documentation to virGlobalInit, virInitialize,
and virGetVersion that better explains initialization.
* src/libvirt.c (virGetVersion, virConnectRef, virDomainRef)
(virNetworkRef, virInterfaceRef, virStoragePoolRef)
(virStorageVolRef, virNodeDeviceRef, virSecretRef, virStreamRef)
(virNWFilterRef, virDomainSnapshotRef): Debug on function entry.
* src/libvirt-lxc.c (virDomainLxcEnterNamespace)
(virDomainLxcEnterSecurityLabel): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
I noticed that the virDomainQemuMonitorCommand debug output wasn't
telling me the name of the domain it was working on. While it was
easy enough to determine which pointer matches the domain based on
other log messages, it is nicer to be consistent.
* src/util/viruuid.h (VIR_UUID_DEBUG): Moved here from...
* src/libvirt.c (VIR_UUID_DEBUG): ...here.
(VIR_ARG15, VIR_HAS_COMMA, VIR_DOMAIN_DEBUG_EXPAND)
(VIR_DOMAIN_DEBUG_PASTE, VIR_DOMAIN_DEBUG_0, VIR_DOMAIN_DEBUG_1)
(VIR_DOMAIN_DEBUG_2, VIR_DOMAIN_DEBUG): Move...
* src/datatypes.h: ...here.
* src/libvirt-qemu.c (virDomainQemuMonitorCommand)
(virDomainQemuAgentCommand): Better debug messages.
* src/libvirt-lxc.c (virDomainLxcOpenNamespace): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Preliminary cleanups to make search-and-replace easier in later
patches. Many of these were done by grepping for (multiline)
pattern violations, then bundled all into one patch.
* src/libvirt.c: Uniform two spaces between functions, return
type and open brace on separate line, avoid blank lines around
open brace, label in column 1, drop redundant (), consistent
indentation for function headers split across lines.
Signed-off-by: Eric Blake <eblake@redhat.com>
Since libvirt 0.9.3, the entire virevent.c file has been a public
API, so improve the documentation in this file. Also, fix a
potential core dump - it could only be triggered by bogus use of
the API and would only affect the caller (not libvirtd), but we
might as well be nice.
* src/libvirt.c (virConnectSetKeepAlive)
(virConnectDomainEventRegister, virConnectDomainEventRegisterAny)
(virConnectNetworkEventRegisterAny): Document event loop requirement.
* src/util/virevent.c (virEventAddHandle, virEventRemoveHandle)
(virEventAddTimeout, virEventRemoveTimeout): Likewise.
(virEventUpdateHandle, virEventUpdateTimeout): Likewise, and avoid
core dump if caller didn't register handler.
(virEventRunDefaultImpl): Expand example, and set up code block in
html docs.
(virEventRegisterImpl, virEventRegisterDefaultImpl): Document more
on the use of the event loop.
Signed-off-by: Eric Blake <eblake@redhat.com>
Prior to this patch, an attempt to register an event without an
event loop started results in the vague:
libvirt: Remote Driver error : adding cb to list
Now it gives the much nicer:
libvirt: error : internal error: could not initialize domain event timer
This also avoids hiding other reasonable error messages, such as
attempts to register a duplicate callback or OOM errors.
* src/remote/remote_driver.c (remoteConnectNetworkEventRegisterAny)
(remoteConnectDomainEventRegister)
(remoteConnectDomainEventRegisterAny): Preserve more detailed error.
Signed-off-by: Eric Blake <eblake@redhat.com>
On AArch64 the kernel prints one "processor" (lower case 'p') line per
core. As this was missing from the test data, virSysinfo was not
parsing any processors at all.
Fix the test data so the test now passes.
'make syntax-check' wants a newer gnulib for 2014 copyright.
Also, a couple of fixes for bootstrap issues reported on IRC:
- on some older glibc systems, ./configure could deadlock due to
a glibc malloc bug
- on FreeBSD systems, a broken autom4te coupled with gettext
0.18.3 prevents bootstrap; we can't work around it, but can at
least inform the user why they have a problem
And as always, portability fixes in other modules, some of which
are used by libvirt.
* .gnulib: Update to latest, in part for bootstrap improvements,
and for the new year.
* bootstrap: Resync to gnulib.
* gnulib/local/m4/ssize_t.m4.diff: Regenerate.
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit eb70ceb tried to create a code block for
libvirt-libvirt.html#virConnectGetType, but failed to note
that our doc generator treats everything after "Returns" as
part of the return description rather than looking for
paragraph and code layout. Fix some other API that also had
generic details crammed into the return type paragraph.
* src/libvirt.c (virConnectOpen, virConnectOpenReadOnly)
(virConnectOpenAuth, virConnectListAllDomains): Fit doc pattern.
Signed-off-by: Eric Blake <eblake@redhat.com>
This resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=1046337
The <driver> name attribute of an interface is interpreted in two
different ways depending on the <interface> type - if the interface is
type='hostdev', then the driver name describes which backend to use
for the hostdev device assignment (vfio or kvm), but if the interface
is any emulated type *and* the model type is "virtio", then the driver
name can be "vhost" or "qemu", telling which backend qemu should use
to communicate with the emulated device.
The problem comes when someone has defined a an interface like this
(which is accepted by the parser as long as no <driver name='xxx'/> is
specified):
<interface type='hostdev'>
...
<model type='virtio'/>
...
</interface>
As libvirt storing this definition in the domain's status, the driver
name is automatically filled in with the backend that was
automatically decided by libvirt, so it stores this in the status:
<interface type='hostdev'>
...
<driver name='vfio'/>
...
<model type='virtio'/>
...
</interface>
This isn't noticed until the next time libvirtd is restarted - as it
is reading the status of all domains, it encounters the above
interface definition, logs an error:
internal error: Unknown interface <driver name='vfio'> has been specified
and fails to reload the domain status, so the domain is marked as
inactive.
The solution is to stop the parser from interpreting <driver>
attributes as if the device was an emulated virtio device, when it is
actually a hostdev.
(Although the bug has existed since vfio support was added, it has
just recently become more apparent because libvirt previously didn't
automatically set the driver name for hostdev interfaces in the domain
status to vfio/kvm as it does since commit f094aa, first appearing in
v1.1.4.)
Similar to commit 52dbeac, we should indent code snippets in
other places to ensure they appear correctly in html. See
http://libvirt.org/html/libvirt-libvirt.html#virNodeGetCPUStats
for an example improved by this patch. Also fix some missing
semicolons in the examples.
* src/libvirt.c: Indent code samples in comments.
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1044806
Currently, sending the ANSI_A keycode from os_x codepage doesn't work as
it has a special value of 0x0. Our internal code handles that no
different to other not defined keycodes. Hence, in order to allow it we
must change all the undefined keycodes from 0 to -1 and adapt some code
too.
# virsh send-key guestname --codeset os_x ANSI_A
error: invalid keycode: 'ANSI_A'
# virsh send-key guestname --codeset os_x ANSI_B
# virsh send-key guestname --codeset os_x ANSI_C
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Currently, the @flags usage is a bit unclear at first sight to say the
least. There's no need for such unclear code especially when we can
borrow the working code from qemuDomainShutdownFlags().
In addition, this fixes one bug too. If user requested both
VIR_DOMAIN_SHUTDOWN_INITCTL and VIR_DOMAIN_SHUTDOWN_SIGNAL at the same
time, he is basically saying: 'Use the force Luke! If initctl fails try
sending a signal.' But with the current code we don't do that. If
initctl fails for some reason (e.g. inability to write to /dev/initctl)
we don't try sending any signal but fail immediately. To make things
worse, making a domain shutdown with bare _SIGNAL was working by blind
chance of a @rc variable being placed at correct place on the stack so
its initial value was zero.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=956994
Currently, it is possible to start an interface that is already running:
# virsh iface-start eth2
Interface eth2 started
# echo $?
0
# virsh iface-start eth2
Interface eth2 started
# echo $?
0
# virsh iface-start eth2
Interface eth2 started
# echo $?
0
Same applies for destroying a dead interface. We should not allow such
state transitions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
