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These APIs can be used to execute arbitrary emulators.
Forbid them on read-only connections.
Fixes: CVE-2019-10168
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit bf6c2830b6)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This API can be used to execute arbitrary emulators.
Forbid it on read-only connections.
Fixes: CVE-2019-10167
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 8afa68bac0)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The virDomainManagedSaveDefineXML can be used to alter the domain's
config used for managedsave or even execute arbitrary emulator binaries.
Forbid it on read-only connections.
Fixes: CVE-2019-10166
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit db0b78457f)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The virDomainSaveImageGetXMLDesc API is taking a path parameter,
which can point to any path on the system. This file will then be
read and parsed by libvirtd running with root privileges.
Forbid it on read-only connections.
Fixes: CVE-2019-10161
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit aed6a032ce)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The virtlogd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600
Fixes CVE-2019-10132
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit e37bd65f99)
The virtlockd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600
Fixes CVE-2019-10132
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit f111e09468)
The admin protocol RPC messages are only intended for use by the user
running the daemon. As such they should not be allowed for any client
UID that does not match the server UID.
Fixes CVE-2019-10132
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 96f41cd765)
The VM Manager app is no longer present on the Play store and while
Google shows a couple of hits they look like the typical untrustworthy
3rd party download redistributors rather than an official site.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The page we link to is a 404 and github repo hasn't been touched since
2012 so is clearly dead.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The libvirt specific page linked for buildbot is a 404. This replacement
link is the closest to what was originally linked.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Update the wording to note the values for polling are purely dynamic
and won't be saved across domain stop/(re)start or save/restore.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Most of our completers used the pattern:
if ((nITEM = virITEMListAll()) < 0)
return NULL;
but the virDomainSnapshot and virStorageVolume completers were instead
using goto error. If the ListAll fails with -1, the cleanup label was
running a loop of 'size_t i < int nITEM', which is an extreme waste of
CPU cycles. Broken since their introduction in v4.1.
Fixes: f81f8b62
Fixes: 4cb4b649
Reported-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Even though Coverity can prove that 'last' is always set if the prior
loop executed, gcc 8.0.1 cannot:
CC conf/libvirt_conf_la-virdomainmomentobjlist.lo
../../src/conf/virdomainmomentobjlist.c: In function 'virDomainMomentMoveChildren':
../../src/conf/virdomainmomentobjlist.c:178:19: error: 'last' may be used uninitialized in this function [-Werror=maybe-uninitialized]
last->sibling = to->first_child;
~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
Rewrite the loop to a form that should be easier for static analysis
to work with.
Fixes: ced0898f86
Reported-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
commit edaf13565 modified the stats retrieval for OVS interfaces to
not fail when one of the fields was unrecognized by the ovs-vsctl
command, but ovs-vsctl was still returning an error, and libvirt was
cluttering the logs with these inconsequential error messages.
This patch modifies the GET_STAT macro to add "--if-exists" to the
ovs-vsctl command, which causes it to return an empty string (and exit
with success) if the requested statistic isn't in its database, thus
eliminating the ugly error messages from the log.
Resolves: https://bugzilla.redhat.com/1683175
Signed-off-by: Laine Stump <laine@laine.org>
The warning is reported at a code path which already reports a proper
error so it's pointless to add yet another line into logs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Avoid the extra parameter passing in the disk 'dst' parameter to be
reported instead of the device alias. Using 'dst' instead of alias does
not add much value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainRemoveDiskDevice calls qemuDomainReleaseDeviceAddress which
already calls virDomainUSBAddressRelease so we don't need to call it
again.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Introduced in fdf6c89ee7, this dependency looks weird. It was
needed because of the way that while() loop was written - it
fetches next argument in every iteration. Therefore, our only
option was for ARG_END to have the same value as QEMU_CAPS_LAST.
This also meant that QEMU_CAPS_* could have been only at the end
of the __VA_ARGS__.
This commit reworks the while() loop and removes the dependency.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
There is one specific caller (testInfoSetArgs() in
qemuxml2argvtest.c) which expect the va_list argument to change
after returning from the virQEMUCapsSetVAList() function.
However, since we are passing plain va_list this is not
guaranteed. The man page of stdarg(3) says:
If ap is passed to a function that uses va_arg(ap,type), then
the value of ap is undefined after the return of that function.
(ap is a variable of type va_list)
I've seen this in action in fact: on i686 the qemuxml2argvtest
fails on the second test case because testInfoSetArgs() sees
ARG_QEMU_CAPS and calls virQEMUCapsSetVAList to process the
capabilities (in this case there's just one
QEMU_CAPS_SECCOMP_BLACKLIST). But since the changes are not
reflected in the caller, in the next iteration testInfoSetArgs()
sees the QEMU capability and not ARG_END.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The mock fopen() function will abort if "/proc/mounts" is
requested with "r" permissions and VIR_CGROUP_MOCK_FILENAME
env var is not set.
Unfortunately this is triggering by the libselinux library
constructor when it tries to read /proc/mounts to find out
if selinuxfs is mounted in an unusual place.
This, however, only affects libselinux in Debian as that
opens with "r", while in Fedora / RHEL it opens "re" and
thus luckily never triggered the abort(), instead getting
an EACCESS.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 6b90a84738.
It turns out gcc -O2 is not happy with it, complaining:
/home/pipo/libvirt/src/qemu/qemu_driver.c: In function 'qemuDomainSnapshotCreateXML':
/home/pipo/libvirt/src/qemu/qemu_driver.c:15389:26: error: potential null pointer dereference [-Werror=null-dereference]
bool memory = snapdef->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL;
~~~~~~~^~~~~~~~
/home/pipo/libvirt/src/qemu/qemu_driver.c:15389:26: error: potential null pointer dereference [-Werror=null-dereference]
In file included from /home/pipo/libvirt/src/util/virbuffer.h:27,
from /home/pipo/libvirt/src/conf/capabilities.h:27,
from /home/pipo/libvirt/src/conf/domain_conf.h:32,
from /home/pipo/libvirt/src/qemu/qemu_agent.h:26,
from /home/pipo/libvirt/src/qemu/qemu_driver.c:40:
/home/pipo/libvirt/src/util/viralloc.h:125:34: error: potential null pointer dereference [-Werror=null-dereference]
# define VIR_ALLOC_N(ptr, count) virAllocN(&(ptr), sizeof(*(ptr)), (count), true, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
VIR_FROM_THIS, __FILE__, __FUNCTION__, __LINE__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/pipo/libvirt/src/qemu/qemu_driver.c:15103:9: note: in expansion of macro 'VIR_ALLOC_N'
if (VIR_ALLOC_N(ret, snapdef->ndisks) < 0)
^~~~~~~~~~~
/home/pipo/libvirt/src/qemu/qemu_driver.c:15798:45: error: null pointer dereference [-Werror=null-dereference]
virDomainSnapshotObjGetDef(snap)->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL) {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
As the patch simplified one or two callers at the risk of making
many other callers now candidates to trigger aggressive compiler
warnings, it isn't worth it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Use the common base class virDomainMoment for iterator callbacks
related to snapshots from the qemu code, so that when checkpoint
operations are introduced, they can share the same callbacks.
Simplify the code for qemuDomainSnapshotCurrent by better utilizing
virDomainMoment helpers.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The qemu driver already had a full-blown virDomainMomentObjPtr to
check against, and the test driver ought to have one since we get
better error checking that the user passed in a valid object. Removes
the need for a helper function added in commit commit 4819f54b.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
ldconfig needs to be called after installing or uninstalling
shared libraries.
For a very long time, libvirt didn't have a separate package
containing just the shared libraries, and so it shipped them
in the same one as the clients.
Since commit 70b4f0e719, however, shared libraries have been
moved from -client to their own -libs package; unfortunately,
the corresponding ldconfig calls were not moved at the same
time, which is what this commit takes care of.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The VIR_MIGRATE_PARALLEL flag is implemented using QEMU's multifd
migration capability and the corresponding multifd-channels migration
parameter.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This patch adds a new VIR_MIGRATE_PARALLEL flag for migration APIs which
will ask the hypervisor to use multiple parallel connections for
migrating a domain. The number of parallel connections can be set using
VIR_MIGRATE_PARAM_PARALLEL_CONNECTIONS typed parameter.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Prepare for introducing a bunch of new public APIs related to
backup checkpoints by first introducing a new internal type
and errors associated with that type. Checkpoints are modeled
heavily after virDomainSnapshotPtr (both represent a point in
time of the guest), although a snapshot exists with the intent
of rolling back to that state, while a checkpoint exists to
make it possible to create an incremental backup at a later
time.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Since I was copying this text to form checkpoint XML and API
documentation, I might as well make improvements along the way. Most
of these changes are based on reviews of the checkpoint docs.
Among other things: grammar tweaks, point to a single source of
documentation rather than repeating verbosity, reword things for
easier legibility.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 86c0ed6f70, and
subsequent refactorings of the function into new files. There are no
callers of this function - I had originally proposed it for
implementing a new bulk snapshot API, but that proved to be too
invasive given RPC limits. I also tried using it for streamlining how
the qemu driver stores snapshot state across libvirtd restarts
internally, but in the end, the risks of a new internal format
outweighed the benefits of one file per snapshot.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 1b57269cbc, and
subsequent refactorings of the function into new files. There are no
callers of this function - I had originally proposed it for
implementing a new bulk snapshot API, but that proved to be too
invasive given RPC limits. I also tried using it for streamlining how
the qemu driver stores snapshot state across libvirtd restarts
internally, but in the end, the risks of a new internal format
outweighed the benefits of one file per snapshot.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Running QEMU as root is a pretty bad idea, so try to make the
user aware of that as part of the configure summary.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Our current defaults are root:wheel on FreeBSD and macOS, root:root
everywhere else.
Looking at what downstream distributions actually do, we can see that
these defaults are overriden the vast majority of the time, with a
number of variations showing up in the wild:
* qemu:qemu -> Used by CentOS, Fedora, Gentoo, OpenSUSE, RHEL
and... As it turns out, our very own spec file :)
* libvirt-qemu:libvirt-qemu -> Used by Debian.
* libvirt-qemu:kvm -> Used by Ubuntu.
* nobody:nobody -> Used by Arch Linux.
Based on this information, we can do a better job at integrating with
downstream packages: if the distro-specific user and group already
exist on the system then we use them, and if not (or we're building
on an unknown OS) we just use root:root as we would have before.
This change makes it less likely that people building from source
will end up running their guests as root, which is a very desiderable
outcome from the security point of view.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
If qemuFirmwareFetchConfigs() returned more or fewer paths than
expected all that we see is the following error message:
Expected 5 paths, got 7
While it is technically correct (the best kind of correct), we
can do better:
Unexpected path (i=0). Expected /some/path got /some/other/path
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
For [some unknown reason, possibly/probably pure chance], Net devices
have been taken offline and their bandwidth tc rules cleared as the
very first operation when detaching the device. This is contrary to
every other type of device, where all hostside teardown is delayed
until we receive the DEVICE_DELETED event back from qemu, indicating
that the guest has finished with the device.
This patch delays these two operations until receipt of
DEVICE_DELETED, which removes an ugly wart from
qemuDomainDetachDeviceLive(), and also seems to be a more correct
sequence of events.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event is sent after qemu has
responded to a device_del command with a DEVICE_DELETED event. Before
queuing the event, *some* of the final teardown of the device's
trappings in libvirt is done, but not *all* of it. As a result, an
application may receive and process the DEVICE_REMOVED event before
libvirt has really finished with it.
Usually this doesn't cause a problem, but it can - in the case of the
bug report referenced below, vdsm is assigning a PCI device to a guest
with managed='no', using livirt's virNodeDeviceDetachFlags() and
virNodeDeviceReAttach() APIs. Immediately after receiving a
DEVICE_REMOVED event from libvirt signalling that the device had been
successfully unplugged, vdsm would cal virNodeDeviceReAttach() to
unbind the device from vfio-pci and rebind it to the host driverm but
because the event was received before libvirt had completely finished
processing the removal, that device was still on the "activeDevs"
list, and so virNodeDeviceReAttach() failed.
Experimentation with additional debug logs proved that libvirt would
always end up dispatching the DEVICE_REMOVED event before it had
removed the device from activeDevs (with a *much* greater difference
with managed='yes', since in that case the re-binding of the device
occurred after queuing the device).
Although the case of hostdev devices is the most extreme (since there
is so much involved in tearing down the device), *all* device types
suffer from the same problem - the DEVICE_REMOVED event is queued very
early in the qemuDomainRemove*Device() function for all of them,
resulting in a possibility of any application receiving the event
before libvirt has really finished with the device.
The solution is to save the device's alias (which is the only piece of
info from the device object that is needed for the event) at the
beginning of processing the device removal, and then queue the event
as a final act before returning. Since all of the
qemuDomainRemove*Device() functions (except
qemuDomainRemoveChrDevice()) are now called exclusively from
qemuDomainRemoveDevice() (which selects which of the subordinates to
call in a switch statement based on the type of device), the shortest
route to a solution is to doing the saving of alias, and later
queueing of the event, in the higher level qemuDomainRemoveDevice(),
and just completely remove the event-related code from all the
subordinate functions.
The single exception to this, as mentioned before, is
qemuDomainRemoveChrDevice(), which is still called from somewhere
other than qemuDomainRemoveDevice() (and has a separate arg used to
trigger different behavior when the chr device has targetType ==
GUESTFWD), so it must keep its original behavior intact, and must be
treated differently by qemuDomainRemoveDevice() (similar to the way
that qemuDomainDetachDeviceLive() treats chr and lease devices
differently from all the others).
Resolves: https://bugzilla.redhat.com/1658198
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Now that all the qemuDomainDetachPrep*() functions look nearly
identical at the end, we can put one copy of that identical code in
qemuDomainDetachDeviceLive() at the point after the individual prep
functions have been called, and remove the duplicated code from all
the prep functions. The code to locate the target "detach" device
based on the "match" device remains, as do all device-type-specific
validations.
Unfortunately there are a few things going on at once in this patch,
which makes it a bit more difficult to follow than the others; it was
just impossible to do the changes in stages and still have a
buildable/testable tree at each step.
The other changes of note:
* The individual prep functions no longer need their driver or async
args, so those are removed, as are the local "ret" variables, since
in all cases the functions just directly return -1 or 0.
* Some of the prep functions were checking for a valid alias and/or
for attempts to detach a multifunction PCI device, but not all. In
fact, both checks are valid (or at least harmless) for *all* device
types, so they are removed from the prep functions, and done a
single time in the common function.
(any attempts to *create* an alias when there isn't one has been
removed, since that is doomed to failure anyway; the only way the
device wouldn't have an alias is if 1) the domain was created by
calling virsh qemu-attach to attach an existing qemu process to
libvirt, and 2) the qemu command that started said process used "old
style" arguments for creating devices that didn't have any device
ids. Even if we constructed a device id for one of these devices,
qemu wouldn't recognize it in the device_del command anyway, so we
may as well fail earlier with "device missing alias" rather than
failing later with "couldn't delete device net0".)
* Only one type of device has shutdown code that must not be called
until after *all* validation of the device is done (including
checking for multifunction PCI and valid alias, which is done in the
toplevel common code). For this reason, the Net function has been
split in two, with the 2nd half (qemuDomainDetachShutdownNet())
called from the common function, right before sending the delete
command to qemu.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Although all hotpluggable devices other than lease, controller,
watchdof, and vsock can be audited, and *are* audited when an unplug
is successful, only disk, net, and hostdev were actually being audited
on failure.
This patch corrects that omission.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function can be called with a virDomainDevicePtr and whether or
not the removal was successful, and it will call the appropriate
virDomainAudit*() function with the appropriate args for whatever type
of device it's given (or do nothing, if that's appropriate). This
permits generalizing some code that currently has a separate copy for
each type of device.
NB: Although the function initially will be called only with
success=false, that has been made an argument so that in the future
(when the qemuDomainRemove*Device() functions have had their common
functionality consolidated into qemuDomainRemoveDevice()), this new
common code can call qemuDomainRemoveAuditDevice() for all types.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDeviceChr and qemuDomainDetachDeviceLease are more
consistent with each other.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Most of these functions will soon contain only some setup for
detaching the device, not the detach code proper (since that code is
identical for these devices). Their device specific functions are all
being renamed to qemuDomainDetachPrep*(), where * is the
name of that device's data member in the virDomainDeviceDef
object.
Since there will be other code in qemuDomainDetachDeviceLive() after
the calls to qemuDomainDetachPrep*() that could still fail, we no
longer directly set "ret" with the return code from
qemuDomainDetachPrep*() functions, but simply return -1 on
failure, and wait until the end of qemuDomainDetachDeviceLive() to set
ret = 0.
Along with the rename, qemuDomainDetachPrep*() functions are also
given similar arglists, including an arg called "match" that points to
the proto-object of the device we want to delete, and another arg
"detach" that is used to return a pointer to the actual object that
will be (for now *has been*) detached. To make sure these new args
aren't confused with existing local pointers that sometimes had the
same name (detach), the local pointer to the device is now named after
the device type ("controller", "disk", etc). These point to the same
place as (*detach)->data.blah, it's just easier on the eyes to have,
e.g., "disk->dst" rather than "(*detach)->data.disk-dst".
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The Chr and Lease devices have detach code that is too different from
the other device types to handle with common functionality (which will
soon be added at the end of qemuDomainDetachDeviceLive(). In order to
make this difference obvious, move the cases for those two device
types to the top of the switch statement in
qemuDomainDetachDeviceLive(), have the cases return immediately so the
future common code at the end of the function will be skipped, and
also include some hopefully helpful comments to remind future
maintainers why these two device types are treated differently.
Any attempt to detach an unsupported device type should also skip the
future common code at the end of the function, so the case for
unsupported types is similarly changed from a simple break to a return
-1.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
I'm about to add a second virDomainDeviceDef to this function that
will point to the actual device in the domain object. while this is
just a partially filled-in example of what to look for. Naming it
match will make the code easier to follow.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
These are no longer called from qemu_driver.c, since the function that
called them (qemuDomainDetachDeviceLive()) has been moved to
qemu_hotplug.c, and they are no longer called from testqemuhotplug.c
because it now just called qemuDomainDetachDeviceLive() instead of all
the subordinate functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The individual qemuDomainDetach*Device() functions will soon be "less
functional", since some of the code that is duplicated in 10 of the 12
detach functions is going to be moved into the common
qemuDomainDetachDeviceLive(), which calls them all.
qemuhotplugtest.c is the only place any of these individual functions
is called other than qemuDomainDetachDeviceLive() itself. Fortunately,
qemuDomainDetachDeviceLive() provides exactly the functionality needed
by the test driver (except that it supports detach of more device
types than the test driver has tests for).
This patch replaces the calls to
qemuDomainDetach(Chr|Shmen|Watchdog|Disk)Device with a single call to
the higher level function, allowing us to shift functionality between
the lower level functions without breaking the tests.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDeviceLive() is called from two places in
qemu_driver.c, and qemuDomainUpdateDeviceList() is called from the
end of qemuDomainDetachDeviceLive(), which is now in qemu_hotplug.c
This patch replaces the single call to qemuDomainUpdateDeviceList()
with two calls to it immediately after return from
qemuDomainDetachDeviceLive(). This is only done if the return from
that function is exactly 0, in order to exactly preserve previous
behavior.
Removing that one call from qemuDomainDetachDeviceList() will permit
us to call it from the test driver hotplug test, replacing the
separate calls to qemuDomainDetachDeviceDiskLive(),
qemuDomainDetachChrDevice(), qemuDomainDetachShmemDevice() and
qemuDomainDetachWatchdog(). We want to do this so that part of the
common functionality of those three functions (and the rest of the
device-specific Detach functions) can be pulled up into
qemuDomainDetachDeviceLive() without breaking the test. (This is done
in the next patch).
NB: Almost certainly this is "not the best place" to call
qemuDomainUpdateDeviceList() (actually, it is provably the *wrong*
place), since it's purpose is to retrieve an "up to date" list of
aliases for all devices from qemu, and if the guest OS hasn't yet
processed the detach request, the now-being-removed device may still
be on that list. It would arguably be better to instead call
qemuDomainUpdateDevicesList() later during the response to the
DEVICE_DELETED event for the device. But removing the call from the
current point in the detach could have some unforeseen ill effect due
to changed timing, so the change to move it into
qemuDomainRemove*Device() will be done in a separate patch (in order
to make it easily revertible in case it causes a regression).
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDeviceControllerLive() just checks if the controller
type is SCSI, and then either returns failure, or calls
qemuDomainDetachControllerDevice().
Instead, lets just check for type != SCSI at the top of the latter
function, and call it directly.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function is going to take on some of the functionality of its
subordinate functions, which all live in qemu_hotplug.c.
qemuDomainDetachDeviceControllerLive() is only called from
qemuDomainDetachDeviceLive() (and will soon be merged into
qemuDomainDetachControllerDevice(), which is in qemu_hotplug.c), so
it is also moved.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
They were added in qemu commit 7572150c189c6553c2448334116ab717680de66d
released in v0.14.0.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than hard-coding the snapshot filter bit values into the
generic code, add another layer of indirection: callers must map which
of their public filter bits correspond to supported moment bits, then
pass two separate flags (the ones translated for moment code to
operate on, and the remaining ones for the filter callback to operate
on).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The Attach and Detach Lease functions were together in the middle of
the Detach functions. Put them at the end of their respective
sections, since they behave differently from the other attach/detach
functions (DetachLease doesn't use qemuDomainDeleteDevice(), and is
always synchronous).
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
There were two outliers at the end of the file beyond the Vcpu
functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It was sitting down in the middle of all the qemuDomainDetach*()
functions. Move it up with the rest of the qemuDomain*Graphics*()
functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's now only called from one place, and combining the two functions
highlights the similarity with Detach functions for other device
types.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Back in the bad old days different device types required a different
qemu monitor call to detach them, and so an <interface type='hostdev'>
needed to call the function for detaching hostdevs, while other
<interface> types could be deleted as netdevs.
Times have changed, and *all* device types are detached by calling the
common function qemuDomainDeleteDevice(vm, alias), so we don't need to
differentiate between hostdev interfaces and the others for that
reason.
There are a few other netdev-specific functions called during
qemuDomainDetachNetDevice() (clearing bandwidth limits, stopping the
interface), but those turn into NOPs when type=hostdev, so they're
safe to call for type=hostdev.
The only thing that is different + not a NOP is the call to
virDomainAudit*() when qemuDomainDeleteDevice() fails, so if we add a
conditional for that small bit of code, we can eliminate the callout
from qemuDomainDetachNetDevice() to qemuDomainDetachThisDevice(),
which makes this function fit the desired pattern for merging with the
other detach functions, and paves the way to simplifying
qemuDomainDetachHostDevice() too.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDiskDevice() is only called from one place. Moving the
contents of the function to that place makes
qemuDomainDetachDiskLive() more similar to the other Detach functions
called by the toplevel qemuDomainDetachDevice().
The goal is to make each of the device-type-specific functions do this:
1) find the exact device
2) do any device-specific validation
3) do general validation
4) do device-specific shutdown (only needed for net devices)
5) do the common block of code to send device_del to qemu, then
optionally wait for a corresponding DEVICE_DELETED event from
qemu.
with the final aim being that only items 1 & 2 will remain in each
device-type-specific function, while 3 & 5 (which are the same for
almost every type) will be de-duplicated and moved to the toplevel
function that calls all of these (qemuDomainDetachDeviceLive(), which
will also contain a callout to the one instance of (4) (netdev).
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachHostDevice() has a check at the end that calls
qemuDomainDetachNetDevice() in the case that the hostdev is actually a
Net device of type='hostdev'. A long time ago when device removal was
(supposedly but not actually) synchronous, this would cause some extra
code to be run prior to removing the device (e.g. restoring the original MAC
address of the device, undoing some sort of virtual port profile, etc).
For quite awhile now the device removal has been asynchronous, so that
"extra teardown" isn't handled by the detach function, but instead is
handled by the Remove function called at a later time. The result is
that when we call qemuDomainDetachNetDevice() from
qemuDomainDetachHostDevice(), it ends up just calling
qemuDomainDetachThisHostDevice() and returning, which is exactly what
we do for all other hostdevs anyway.
Based on that, remove the behavioral difference when parent.type ==
VIR_DOMAIN_DEVICE_NET, and just call qemuDomainDetachThisHostDevice()
for all hostdevs.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
There are separate Detach functions for PCI, USB, SCSI, Vhost, and
Mediated hostdevs, but the functions are all 100% the same code,
except that the PCI function checks for the guest side of the device
being a PCI Multifunction device, while the other 4 check that the
device's alias != NULL.
The check for multifunction PCI devices should be done for *all*
devices that are connected to the PCI bus in the guest, not just PCI
hostdevs, and qemuIsMultiFunctionDevice() conveniently returns false
if the queried device doesn't connect with PCI, so it is safe to make
this check for all hostdev devices. (It also needs to be done for many
other device types, but that will be addressed in a future patch).
Likewise, since all hostdevs are detached by calling
qemuDomainDeleteDevice(), which requires the device's alias, checking
for a valid alias is a reasonable thing for PCI hostdevs too.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Having an InfoPtr named "dev" made my brain hurt. Renaming it to
"info" gives one less thing to confuse when looking at the code.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
When support for hotplug/unplug of SCSI controllers was added way back
in December 2009 (commit da9d937b), unplug was handled by calling the
now-extinct function qemuMonitorRemovePCIDevice(), which required a
PCI address as an argument. At the same time, the idea of every device
in the config having a PCI address apparently was not yet fully
implemented, because the author of the patch including a check for a
valid PCI address in the device object.
These days, all PCI devices are guaranteed to have a valid PCI
address. But more important than that, we no longer detach devices by
PCI address, but instead use qemuDomainDeleteDevice(), which
identifies the device by its alias. So checking for a valid PCI
address is just pointless extra code that obscures the high level of
similarity between all the individual qemuDomainDetach*Device()
functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuDomainRemoveRNGDevice() calls qemuDomainDetachExtensionDevice().
According to commit 1d1e264f1 that added this code, it should not be
necessary to explicitly remove the zPCI extension device for a PCI
device during unplug, because "QEMU implements an unplug callback
which will unplug both PCI and zPCI device in a cascaded way". In
fact, no other devices call qemuDomainDetachExtensionDevice() during
their qemuDomainRemove*Device() function, so it should be removed from
qemuDomainRemoveRNGDevice as well.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
qemuDomainDetachControllerDevice() calls
qemuDomainDetachExtensionDevice() when the controller type is
PCI. This is incorrect in multiple ways:
* Any code that tears down a device should be in the
qemuDomainRemove*Device() function (which is called after libvirt
gets a DEVICE_DELETED event from qemu indicating that the guest is
finished with the device on its end. The qemuDomainDetach*Device()
functions should only contain code that ensures the requested
operation is valid, and sends the command to qemu to initiate the
unplug.
* qemuDomainDetachExtensionDevice() is a function that applies to
devices that plug into a PCI slot, *not* necessarily PCI controllers
(which is what's being checked in the offending code). The proper
way to check for this would be to see if the DeviceInfo for the
controller device had a PCI address, not to check if the controller
is a PCI controller (the code being removed was doing the latter).
* According to commit 1d1e264f1 that added this code (and other
support for hotplugging zPCI devices on s390), it's not necessary to
explicitly detach the zPCI device when unplugging a PCI device. To
quote:
There's no need to implement hot unplug for zPCI as QEMU
implements an unplug callback which will unplug both PCI and
zPCI device in a cascaded way.
and the evidence bears this out - all the other uses of
qemuDomainDetachExtensionDevice() (except one, which I believe is
also in error, and is being removed in a separate patch) are only to
remove the zPCI extension device in cases where it was successfully
added, but there was some other failure later in the hotplug process
(so there was no regular PCI device to remove and trigger removal of
the zPCI extension device).
* PCI controllers are not hot pluggable, so this is dead code
anyway. (The only controllers that can currently be
hotplugged/unplugged are SCSI controllers).
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
After 7431b3eb9a libvirt requires "filter", "nat" and
"mangle" tables to exist for both IPv4 and IPv6. This fact was
missed in the news.xml and since we don't have any better place
to advertise that let's update old news.
This was refined in 686803a1a2 and since that is not released
yet create a new entry documenting the refinement.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Had this been in place earlier, I would have avoided the bugs in
commit 0baf6945 and 55c2ab3e. Writing the test required me to extend
the power of virsh - creating enough snapshots to cause fanout
requires enough input in a single session that adding comments and
markers makes it easier to check that output is correct. It's still a
bit odd that with test:///default, reverting to a snapshot changes the
domain from running to paused (possibly a bug in how the test driver
copied from the qemu driver) - but the important part is that the test
is reproducible, and any future tweaks we make to snapshot code have
less chance of breaking successful command sequences.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Since test:///default resets state on every connection, writing a test
that covers a sequence of commands must be done from a single
session. But if the test wants to exercise particular failure modes as
well as successes, it can be nice to leave witnesses in the stderr
stream immediately before and after the spot where the expected error
should be, to ensure the rest of the script is not causing errors.
Do this by adding an --err option.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
As the previous commit mentioned, argv mode (such as when you feed
virsh via stdin with <<\EOF instead of via a single shell argument)
didn't permit comments. Do this by treating any command name token
that starts with # as a comment which silently eats all remaining
arguments to the next newline or semicolon.
Note that batch mode recognizes unquoted # at the start of any word as
a command as part of the tokenizer, while this patch only treats # at
the start of the command word as a comment (any other # remaining by
the time vshCommandParse() is processing things was already quoted
during the tokenzier, and as such was probably intended as the actual
argument to the command word earlier in the line).
Now I can do something like:
$ virsh -c test:///default <<EOF
# setup
snapshot-create-as test s1
snapshot-create-as test s2
# check
snapshot-list test --name
EOF
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Continuing from what I did in commit 4817dec0, now I want to write a
sequence that is self-documenting. So I need comments :)
Now I can do something like:
$ virsh -c test:///default '
# setup
snapshot-create-as test s1
snapshot-create-as test s2
# check
snapshot-list test --name
'
Note that this does NOT accept comments in argv mode, another patch
will tackle that.
(If I'm not careful, I might turn virsh into a full-fledged 'sh'
replacement? Here's hoping I don't go that far...)
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Commit 55c2ab3e accidentally introduced an infinite loop while
checking whether a redefined snapshot would cause an infinite loop in
chasing its parents back to a root. Alas, 'make check' did not catch
it, so my next patch will be a testsuite improvement that would have
hung and prevented the bug from being checked in to begin with.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
In a case where we want to hotplug the following disk:
<disk type='file' device='disk'>
(...)
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
In a QEMU guest that has a single OS disk, as follows:
<disk type='file' device='disk'>
(...)
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
What happens is that the existing guest disk will receive the ID
'scsi0-0-0-0' due to how Libvirt calculate the alias based on
the address in qemu_alias.c, qemuAssignDeviceDiskAlias. When hotplugging
a disk that happens to have the same address, Libvirt will calculate
the same ID to it and attempt to device_add. QEMU will refuse it:
$ virsh attach-device ub1810 hp-disk-dup.xml
error: Failed to attach device from hp-disk-dup.xml
error: internal error: unable to execute QEMU command 'device_add': Duplicate ID 'scsi0-0-0-0' for device
And Libvirt follows it up with a cleanup code in qemuDomainAttachDiskGeneric
that ends up removing what supposedly is a faulty hotplugged disk but, in
this case, ends up being the original guest disk.
This patch adds an address verification for all attached devices, avoid
calling the driver attach() function using a device with duplicated address.
The change is done in virDomainDefCompatibleDevice when @action is equal
to VIR_DOMAIN_DEVICE_ACTION_ATTACH. The affected callers are:
- qemuDomainAttachDeviceLiveAndConfig, both LIVE and CONFIG cases;
- lxcDomainAttachDeviceFlags, both LIVE and CONFIG.
The check is done using the virDomainDefHasDeviceAddress, a generic
function that can check address duplicates for all supported device
types, not limiting just to DeviceDisk type.
After this patch, this is the result of the previous attach-device call:
$ ./run tools/virsh attach-device ub1810 hp-disk-dup.xml
error: Failed to attach device from hp-disk-dup.xml
error: Requested operation is not valid: Domain already contains a device with the same address
Reported-by: Srikanth Aithal <bssrikanth@in.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Base macro to unify the actual testCompareXMLToArgv test calls
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
* ARG_CAPS_ARCH must be specified with ARG_CAPS_VER
* ARG_QEMU_CAPS shouldn't be specified with ARG_CAPS_*
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Move DO_CAPS_TEST* qemuCaps init and all the associated setup
into testInfoSetArgs, adding ARG_CAPS_ARCH and ARG_CAPS_VER
options and using those to build the capsfile path locally
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
These blocks are only triggered when updating from a libvirt version
less than 0.9.4, which was released in August 2011. I think it's been
long enough that we can say this upgrade path is unsupported without
an intermediate step.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
We have tests for simple guests with graphics for basically
all other architectures, so it makes sense to include s390x
too.
The input file was generated by running
$ virt-install \
--name guest --os-variant fedora29 \
--vcpus 4 --memory 4096 --disk size=5 \
--graphics vnc \
--print-xml
followed by minor tweaks, using a version of virt-manager
that includes commit 7b9de27a990f.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
As of commit db6c7070e25a, virt-manager will default to using
virtio-blk rather than virtio-scsi for aarch64/virt guests,
bringing them in line with other architectures. Update our test
case to reflect this change.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
This functions tries to add a domain moment (love the name!) onto
a list of domain moments. Firstly, it checks if another moment
with the same name already exists. Then, it creates an empty
moment (without initializing its definition) and tries to add the
moment onto the list dereferencing moment definition in that
process. If it succeeds (which it never can), only after that it
sets moment->def.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 3bd4ed46 introduced this element as required which
breaks backcompat for test driver. Let's make the element optional.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Commit d1a7c08eb changed filter instantiation code to ignore MAC and IP
variables explicitly specified for filter binding. It just replaces
explicit values with values associated with the binding. Before the
commit virNWFilterCreateVarsFrom was used so that explicit value
take precedence. Let's bring old behavior back.
This is useful. For example if domain has two interfaces it makes
sense to list both mac adresses in MAC var of every interface
filterref. So that if guest make a bond of these interfaces
and start sending frames with one of the mac adresses from
both interfaces we can pass outgress traffic from both
interfaces too.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Now that the generic moment code does pretty much everything that both
snapshots and checkpoints will need, it's time to replace the
now-duplicate code in virdomainsnapshotobjlist.c with simpler calls
into the generic code. I considered using sub-classing (a
'virDomainMomentObjList parent;' member, but that requires making the
opaque type visible in headers; so for now, I stuck with a container
instead (a 'virDomainMomentObjListPtr base;' member).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The new code here very heavily resembles the code in
virDomainSnapshotObjList. There are still a couple of spots that are
tied a little too heavily to snapshots (the free function lacks a
polymorphic cleanup until we refactor code to use virObject; and an
upcoming patch will add internal VIR_DOMAIN_MOMENT_LIST flags to
replace the snapshot flag bits), but in general this is fairly close
to the state needed to add checkpoint lists.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that we have made virDomainMomentObj sufficiently generic to
support both snapshots and checkpoints, it is time to rename the file
that it lives in. The split between a generic object and a list of the
generic objects doesn't buy us as much, so it will be easier to stick
all the moment list code in one file, with more code moving in the
next patch. The changes during the move are fairly minor, although it
is worth pointing out that the log/error messages for the new file
report that they are from "domain", since the file will eventually be
shared by both "domain snapshot" and "domain checkpoint".
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that the core of SnapshotObj is agnostic to snapshots and can be
shared with upcoming checkpoint code, it is time to rename the struct
and the functions specific to list operations. A later patch will
shuffle which file holds the common code. This is a fairly mechanical
patch.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Another step towards making the object list reusable for both
snapshots and checkpoints: the list code only ever needs items that
are in the common virDomainMomentDef base type. This undoes a lot of
the churn in accessing common members added in the previous patch, and
the bulk of the patch is mechanical. But there was one spot where I
had to unroll a VIR_STEAL_PTR to work around changed types.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Pull out the common parts of virDomainSnapshotDef that will be reused
for virDomainCheckpointDef into a new base class. Adjust all callers
that use the direct fields (some of it is churn that disappears when
the next patch refactors virDomainSnapshotObj; oh well...).
Someday, I hope to switch this type to be a subclass of virObject, but
that requires a more thorough audit of cleanup paths, and besides
minimal incremental changes are easier to review.
As for the choice of naming:
I promised my teenage daughter Evelyn that I'd give her credit for her
contribution to this commit. I asked her "What would be a good name
for a base class for DomainSnapshot and DomainCheckpoint". After
explaining what a base class was (using the classic OOB Square and
Circle inherit from Shape), she came up with "DomainMoment", which is
way better than my initial thought of "DomainPointInTime" or
"DomainPIT".
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Separate the algorithm for which list members to vist (which is
generic and can be shared with checkpoints, provided that common
filtering bits are either declared with the same value or have a
mapping from public API to common value) from the decision on which
members to return (which is specific to snapshots). The typedef for
the callback function feels a bit heavy here, but will make it easier
to move the common portions in a later patch.
As part of the refactoring, note that the macros for selecting filter
bits are specific to listing functionality, so they belong better in
virdomainsnapshotobjlist.h (missed in commit 9b75154c).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
An upcoming patch will rework virDomainSnapshotObjList to be generic
for both snapshots and checkpoints; reduce the churn by adding a new
accessor virDomainSnapshotObjGetDef() which returns the
snapshot-specific definition even when the list is rewritten to
operate only on a base class, then using it at sites that that are
specific to snapshots. Use VIR_STEAL_PTR when appropriate in the
affected lines.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rather than allowing a leaky abstraction where multiple drivers have
to open-code operations that update the relations in a
virDomainSnapshotObjList, it is better to add accessor functions so
that updates to relations are maintained closer to the internals.
This patch finishes the job started in the previous patch, by getting
rid of all direct access to nchildren, first_child, or sibling outside
of the lowest level functions, making it easier to refactor later on.
The lone new caller to virDomainSnapshotObjListSize() checks for a
return != 0, because it wants to handles errors (-1, only possible if
the hash table wasn't allocated) and existing snapshots (> 0) in the
same manner; we can drop the check for a current snapshot on the
grounds that there shouldn't be one if there are no snapshots.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rather than allowing a leaky abstraction where multiple drivers have
to open-code operations that update the relations in a
virDomainSnapshotObjList, it is better to add accessor functions so
that updates to relations are maintained closer to the internals.
This patch starts the task with a single new function:
virDomainSnapshotMoveChildren(). The logic might not be immediately
obvious [okay, that's an understatement - the existing code uses black
magic ;-)], so here's an overview: The old code has an implicit for
loop around each call to qemuDomainSnapshotReparentChildren() by using
virDomainSnapshotForEachChild() (you'll need a wider context than
git's default of 3 lines to see that); the new code has a more visible
for loop. Then it helps if you realize that the code is making two
separate changes to each child object: STRDUP of the new parent name
prior to writing XML files (unchanged), and touching up the pointer to
the parent object (refactored); the end result is the same whether a
single pass made both changes (both in driver code), or whether it is
split into two passes making one change each (one in driver code, the
other in the new accessor).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
It is easier to track the current snapshot as part of the list of
snapshots. In particular, doing so lets us guarantee that the current
snapshot is cleared if that snapshot is removed from the list (rather
than depending on the caller to do so, and risking a use-after-free
problem, such as the one recently patched in 1db9d0efbf). This
requires the addition of several new accessor functions, as well as a
useful return type for virDomainSnapshotObjListRemove(). A few error
handling sites that were previously setting vm->current_snapshot =
NULL can now be dropped, because the previous function call has now
done it already. Also, qemuDomainRevertToSnapshot() was setting the
current vm twice, so keep only the one used on the success path.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rework the logic in qemuDomainSnapshotLoad() to set
vm->current_snapshot only once at the end of the loop, rather than
repeatedly querying it during the loop, to make it easier for the next
patch to use accessor functions rather than direct manipulation of
vm->current_snapshot. When encountering multiple snapshots claiming
to be current (based on the presence of an <active>1</active> element
in the XML, which libvirt only outputs for internal use and not for
any public API), this changes behavior from warning only once and
running with no current snapshot, to instead warning on each duplicate
and selecting the last one encountered (which is arbitrary based on
readdir() ordering, but actually stands a fair chance of being the
most-recently created snapshot whether by timestamp or by the
propensity of humans to name things in ascending order).
Note that the code in question is only run by libvirtd when it first
starts, reading state from disk from the previous run into memory for
this run. Since the data resides somewhere that only libvirt should be
touching (typically /var/lib/libvirt/qemu/snapshot/*), it should be
clean. So in the common case, the code touched here is unreachable.
But if someone is actually messing with files behind libvirt's back,
they deserve the change in behavior.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The only use for the 'current' member of virDomainSnapshotDef was with
the PARSE/FORMAT_INTERNAL flag for controlling an internal-use
<active> element marking whether a particular snapshot definition was
current, and even then, only by the qemu driver on output, and by qemu
and test driver on input. But this duplicates vm->snapshot_current,
and gets in the way of potential simplifications to have qemu store a
single file for all snapshots rather than one file per snapshot. Get
rid of the member by adding a bool* parameter during parse (ignored if
the PARSE_INTERNAL flag is not set), and by adding a new flag during
format (if FORMAT_INTERNAL is set, the value printed in <active>
depends on the new FORMAT_CURRENT).
Then update the qemu driver accordingly, which involves hoisting
assignments to vm->current_snapshot to occur prior to any point where
a snapshot XML file is written (although qemu kept
vm->current_snapshot and snapshot->def_current in sync by the end of
the function, they were not always identical in the middle of
functions, so the shuffling gets a bit interesting). Later patches
will clean up some of that confusing churn to vm->current_snapshot.
Note: even if later patches refactor qemu to no longer use
FORMAT_INTERNAL for output (by storing bulk snapshot XML instead), we
will always need PARSE_INTERNAL for input (because on upgrade, a new
libvirt still has to parse XML left from a previous libvirt).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When a future patch converts virDomainSnapshotDef to be a virObject,
we need to be careful that converting VIR_FREE() to virObjectUnref()
does not result in double frees. Reorder the assignment of def into
the object to the point after object is in the hash table (as
otherwise the virHashAddEntry() error path would have a shot at
freeing def prematurely).
Suggested-by: John Ferlan <ferlan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Change the return value of virDomainSnapshotObjListParse() to return
the number of snapshots imported, and allow a return of 0 (the
original proposal of adding a flag to virDomainSnapshotCreateXML
required returning an arbitrary non-NULL snapshot, but that idea was
abandoned; and by returning a count, we are no longer constrained to a
non-empty list).
Document which flags are supported (namely, just SECURE) in
virDomainSnapshotObjListFormat().
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
An upcoming patch will be reworking virDomainSnapshotDef to have a
base class; minimize the churn by using a local variable to reduce the
number of dereferences required when acessing the domain definition
associated with the snapshot.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Move DO_TEST* qemuCaps init into testInfoSetArgs. This is a step
towards unifying the different test macro implementations
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is closer to the pattern of qemuxml2xml tests, and will make
things easier if we extend testInfo to contain more freeable data
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Rather than make callers do it. The operative info is just arch
and ver which we are passing in already.
Fold in stripmachinealiases too since it is just dependent on
ver value
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
They are potentially useful at the moment, but we will be making
things much more flexible
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to drop parseFlags from DO_TEST_FULL
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to drop migrateFrom and migrateFd from DO_TEST_FULL
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to drop stub GIC values from DO_TEST_FULL calls
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is necessary before we can start adding more optional parameter
implementations to DO_TEST_FULL
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This establishes a pattern that will allow us to make test macros
more general purpose, by taking optional arguments. The general
format will be:
DO_TEST_FULL(...
ARG_FOO, <value1>,
ARG_BAR, <value2>)
ARG_X are just enum values that we look for in the va_args and know
how to interpret.
Implement this for the existing implicit qemuCaps va_args
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
For now it just fills in the qemuCaps list. We will expand it
in future patches
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
And adjust virQEMUCapsSetList to use it. It will also be used in future
patches.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The following virsh command was triggering a use-after-free:
$ virsh -c test:///default '
snapshot-create-as test s1
snapshot-create-as test s2
snapshot-delete --children-only test s1
snapshot-current --name test'
Domain snapshot s1 created
Domain snapshot s2 created
Domain snapshot s1 children deleted
error: name in virGetDomainSnapshot must not be NULL
I got lucky on that run - although the error message is quite
unexpected. On other runs, I was able to get a core dump, and
valgrind confirms there is a definitive problem.
The culprit? We were inconsistent about whether we set
vm->current_snapshot, snap->def->current, or both when updating how
the current snapshot was being tracked. As a result, deletion did not
see that snapshot s2 was previously current, and failed to update
vm->current_snapshot, so that the next API using the current snapshot
failed because it referenced stale memory for the now-gone s2 (instead
of the intended s1).
The test driver code was copied from the qemu code (which DOES track
both pieces of state everywhere), but was purposefully simplified
because the test driver does not have to write persistent snapshot
state to the file system. But when you realize that the only reason
snap->def->current needs to exist is when writing out one file per
snapshot for qemu, it's just as easy to state that the test driver
never has to mess with the field (rather than chasing down which
places forgot to set the field), and have vm->current_snapshot be the
sole source of truth in the test driver.
Ideally, I'd get rid of the 'current' member in virDomainSnapshotDef,
as well as the 'current_snapshot' member in virDomainDef, and instead
track the current member in virDomainSnapshotObjList, coupled with
writing ALL snapshot state for qemu in a single file (where I can use
<snapshots current='...'> as a wrapper, rather than
VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL to output <current>1</current> XML
on a per-snapshot file basis). But that's a bigger change, so for now
I'm just patching things to avoid the test driver segfault.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We previously had to disable RBD on 32-bit platforms since Ceph has
dropped all support for 32-bit. Unfortunately anyone with the RPM
libvirt-daemon-driver-storage-rbd installed on 32-bit now has a
broken upgrade path.
To fix this we must make libvirt-daemon-driver-storage-core
have an Obsoletes: libvirt-daemon-driver-storage-rbd < $VER-$REL
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1686927
When trying to create a nwfilter binding via
nwfilterBindingCreateXML() we may encounter a crash. The sequence
of functions called is as follows:
1) nwfilterBindingCreateXML() parses the XML and calls
virNWFilterBindingObjListAdd() which calls
virNWFilterBindingObjListAddLocked()
2) Here, @binding is not found because binding->remove is set.
3) Therefore, controls continue with creating new @binding,
setting its def to the one from 1) and adding it to the hash
table.
4) This fails, because the binding is still in the hash table
(duplicate key is detected).
5) The control jumps to 'error' label where
virNWFilterBindingObjEndAPI() is called which frees the binding
definition passed.
6) Error is propagated to the caller, which calls
virNWFilterBindingDefFree() over the definition again.
The solution is to unset binding->def in case of failure so it's
not freed in step 5).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Storage source private data can be parsed along with other components of
private data rather than a separate function which is called from
multiple places.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virDomainDiskSourcePrivateDataParse and virDomainDiskSourcePRParse don't
need the 'cleanup' label any more thanks to VIR_XPATH_NODE_AUTORESTORE.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function does not have any code in the 'cleanup' label so we can
simplify the control flow.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We can use our VIR_AUTOPTR machinery also for libxml2's xmlDoc and
xmlXPathContext.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In a1c453dc08, during VIR_AUTOFREE() rewrite this wasn't done
properly. @port might be leaked because it's allocated in a for()
loop.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In 669018bc9c I've introduced def->refresh which might be
allocated by virStoragePoolDefRefreshParse() but is never freed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The refresh_volume_allocation variable in
virStoragePoolDefParseXML() has been unused since its
introduction in commit 669018bc9c, and Clang rightfully
complains about this fact.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Use the new refresh volume allocation pool override to skip
computing the actual volume usage if disabled.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The new 'refresh' element can override the default refresh operations
for a storage pool. The only currently supported override is to set
the volume allocation size to the volume capacity. This can be specified
by adding the following snippet:
<pool>
...
<refresh>
<volume allocation='capacity'/>
</refresh>
...
</pool>
This is useful for certain backends where computing the actual allocation
of a volume might be an expensive operation.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The librbd API will transparently revert to a slow disk usage
calculation method if the fast-diff map is marked as invalid.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The unprivileged libvirtd does not have permission to create firewall
rules, or bridge devices, or do anything to the host network in
general. Historically we still activate the network driver though and
let the network start API call fail.
The startup code path which reloads firewall rules on active networks
would thus effectively be a no-op when unprivileged as it is impossible
for there to be any active networks
With the change to use a global set of firewall chains, however, we now
have code that is run unconditionally.
Ideally we would not register the network driver at all when
unprivileged, but the entanglement with the virt drivers currently makes
that impractical. As a temporary hack, we just make the firewall reload
into a no-op.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
During startup libvirtd creates top level chains for both ipv4
and ipv6 protocols. If this fails for any reason then startup
of virtual networks is blocked.
The default virtual network, however, only requires use of ipv4
and some servers have ipv6 disabled so it is expected that ipv6
chain creation will fail. There could equally be servers with
no ipv4, only ipv6.
This patch thus makes error reporting a little more fine grained
so that it works more sensibly when either ipv4 or ipv6 is
disabled on the server. Only the protocols that are actually
used by the virtual network have errors reported.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
During startup we create some top level chains in which all
virtual network firewall rules will be placed. The upfront
creation is done to avoid slowing down creation of individual
virtual networks by checking for chain existance every time.
There are some factors which can cause this upfront creation
to fail and while a message will get into the libvirtd log
this won't be seen by users who later try to start a virtual
network. Instead they'll just get a message saying that the
libvirt top level chain does not exist. This message is
accurate, but unhelpful for solving the root cause.
This patch thus saves any error during daemon startup and
reports it when trying to create a virtual network later.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The rbd_list method has been deprecated in Ceph >= 14.0.0
in favour of the new rbd_list2 method which populates an
array of structs.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The rbd_list method has a quite unpleasant signature returning an
array of strings in a single buffer instead of an array. It is
being deprecated in favour of rbd_list2. To maintain clarity of
code when supporting both APIs in parallel, split the rbd_list
code out into a separate method.
In splitting this we now honour the rbd_list failures.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
After this, newly added enums will not automatically show up in
driver output unless the driver code specifically sets report=true
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Set report=true for all enums currently formatted in the XML
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Set report=true for all enums currently formatted in the XML
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Set report=true for all enums currently formatted in the XML
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
virCapsEnum report is an internal bool indicating whether we
should format the enum in the XML at all. This is unused for
now but will be handled in future patches.
We use a plain bool instead of tristate because the case here
is a bit different than the explicit @supported output. We
already report the equivalent of supported=YES|NO based on
what enum values are filled in. This adds report=false to
handle the ABSENT case.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Change domcaps to skip formatting XML if the default
TRISTATE_BOOL_ABSENT is found. Now when domcaps is extended, driver
XML output won't change until an explicit TRISTATE_BOOL value is set
in driver code.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Upcoming changes will make outputting these subelements optional.
While we are here drop the useless interleave: since this is an output
only format the elements are always in the same order
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<hostdev> and <features> are not supported. <loader>, <graphics>,
and <video> are supported conditionally
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
None of the <feature> bits are supported, and the <loader> piece
is only conditionally supported
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Only gic->supported needs an explicit BOOL_NO setting, all other
'supported' values are handling things correctly
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Switch most 'supported' handling to use virTristateBool, so eventually
we can handle the ABSENT state.
For now the XML formatter treats ABSENT the same as FALSE, so there's
no functional output change. This will be addressed in later patches
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Similar to the macros we have for formatting enums, add a macro to
simplify formatting the pattern:
<FOO supported='yes|no'/>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The 'full' test verifies the output of a virDomainCapsPtr built
by hand. It has the following problems:
The domcaps test suite nowadays has 3 hypervisor driver implementations
which should give us plenty of opportunity to get full domcaps coverage.
I don't think this test has much value. And it has the following issues:
- Requires manual intervention to test new domcaps XML, which is easy
to miss, for example gic bits aren't covered there.
- The SET_ALL_BITS trick it uses to fill in enums will output
values that are never reported by any driver implementation
(strings like 'default')
Let's remove it
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The 'empty' demonstrates XML generated when only bare minimum caps
data has been filled in. This will demonstrate changes that alter
the default XML output.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
We already document how to generate them, so might as well
go the extra mile and document the remaining steps.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
In 0eca80e60 _class was renamed to klass for variety of struct
members. However, gather_usb_cap() was missed out in this rename
leaving FreeBSD build broken.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This code originates from:
commit d0aa10fdd6
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Tue Mar 3 12:03:44 2009 +0000
QEMU security driver usage for sVirt support (James Morris, Dan Walsh, Daniel Berrange)
Originally in the qemudDomainGetSecurityLabel function. It doesn't
appear to have done anything useful back then either. The other two
instances look like copy+paste
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
In d16f803d78 we've tried to solve an issue that after wiping an
image its format might have changed (e.g. from qcow2 to raw) but
libvirt wasn't probing the image format. We fixed this by calling
virStorageBackendRefreshVolTargetUpdate() which is what
refreshPool() would end up calling. But this shortcut is not good
enough because the function is called only for local types of
volumes (like dir, fs, netfs). But now that more backends support
volume wiping we have to call the function with more caution.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
So far we have two branches: either we zero BLOCK_PER_PACKET
(currently 128) block at once, or if we're close to the last block
then we zero out one block at the time. This is very suboptimal.
We know how many block are there left. Might as well just write
them all at once.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This command is fully async. Note that users can use virsh event to be
notified of the guest actually removing the device.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Mention that successful return does not equal to device being detached
similarly as we do at the API level.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This info can be useful to filter devices visible
to mgmt clients so that they won't see devices that
unsafe/not meaningful to pass thru.
Provide class info the way it is provided by udev or
kernel that is as single 6-digit hexadecimal.
Class element is not optional. I guess this should not
break users that use virNodeDeviceCreateXML because
they probably specify only scsi_host capability on
input and then node device driver gets other capabilities
from udev after device appeared.
HAL driver does not get support for the new element in
this patch.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Vim treats *.h files as cpp ones with respect to syntax highlighting.
Thus "class" in _virNodeDevCapPCIDev highlighted mistakenly.
This can be fixed by filetype detection code tunables but it
is more convinient to skip this tuning by every project member.
Let's just use "klass" as field name instead of _class or class
and add syntax rule.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit [1] moved snapshot list functions declaration into
its own file but missed a fix for vz driver.
[1] 9b75154c : snapshot: Break out virDomainSnapshotObjList into its own file
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Only active pools can be refreshed. But our completer offers just
all pool, even inactive ones.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
If pool refresh failed, then the internal table of volumes is
probably left in inconsistent or incomplete state anyways. Clear
it out then. This has an advantage that we can move the
virStoragePoolObjClearVols() from those very few backends that
do call it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This is a wrapper over refreshPool() call as at all places we are
doing basically the same. Might as well have a single function to
call.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
In bf5cf610f2 I've fixed a problem where iscsi-direct
backend was reporting only the last LUN. The fix consisted of
moving virStoragePoolObjClearVols() one level up. However, as it
turns out, storage driver already calls it before calling
refreshPool callback (which is
virStorageBackendISCSIDirectRefreshPool() in this case).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
If virStorageBackendISCSIDirectVolWipeZero() fails, it has
already reported an error which is probably specific enough. Do
not overwrite it with some generic one.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This function reports error for one of the two error paths. This
is unfortunate as a caller see this function failing but doesn't
know right away if an error was reported.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Now that we no longer support the weird "redhat+systemd"
configuration, we can make our code slightly simpler.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Despite the misleading name, these were supposed to be used
with a System V style init; however, none of the platforms we
target is using that kind of init anymore: almost all Linux
distributions have switched to systemd, those that haven't
(such as Gentoo and Alpine) are mostly using OpenRC with
custom init scripts, and the BSDs have been doing their own
thing all along.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Not a single one of the platforms we target still uses Upstart, and
the Upstart project itself has been abandoned for several years now.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
We're gonna drop support for non-systemd init scripts soon,
and we don't want Travis CI builds to break when we do.
Since we have init system auto-detection, we can just rely on
that and stop passing --with-init-script to configure entirely.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
snapshot_conf.h was mixing three separate types: the snapshot
definition, the snapshot object, and the snapshot object list.
Separate out the snapshot object list code into its own file, and
update includes for affected clients.
This is just code motion, but done in preparation of sharing a lot of
the object list code with checkpoints.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The next patch will require access to the helper functions
virDomainSnapshotDefFormatInternal and
virDomainSnapshotRedefineValidate from two different files; make the
file split easier by exporting these functions.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
snapshot_conf.h was mixing three separate types: the snapshot
definition, the snapshot object, and the snapshot object list.
Separate out the snapshot object code into its own file, which
includes moving a typedef to avoid circular inclusions.
Mostly straight code motion, although I fixed a comment along
the way, now that virDomainSnapshotForEachDescendent now
guarantees a topological visit (missed in b647d219).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's easier to locate a typedef if they are stored in sorted order;
do so mechanically via:
$ sed -i '/typedef struct/ {N; N; s/\n//g}' src/conf/virconftypes.h
$ # sorting the lines
$ sed -i '/typedef struct/ s/;/;\n/g' src/conf/virconftypes.h
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As explained in the previous patch, collecting pointer typedefs into a
common header makes it easier to avoid circular inclusions. Continue
the efforts by pulling the appropriate typedefs from capabilities.h
into the new header.
This patch is just straight code motion (all typedefs are listed in
the same order before and after the patch); a later patch will sort
things for legibility.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Right now, snapshot_conf.h is rather large - it deals with three
separate types: virDomainSnapshotDef (the snapshot definition as it
maps to XML), virDomainSnapshotObj (an object containing a def and the
relationship to other snapshots), and virDomainSnapshotObjList (a list
of snapshot objects), where two of the three types are currently
public rather than opaque. What's more, the types are circular: a
snapshot def includes a virDomainPtr, which contains a snapshot list,
which includes a snapshot object, which includes a snapshot def.
In order to split the three objects into separate files, while still
allowing each header to use sane typedefs to incomplete pointers, the
obvious solution is to lift the typedefs into yet another header, with
no other dependencies. Start the split by factoring out all struct
typedefs from domain_conf.h (enum typedefs don't get used in function
signatures, and function typedefs tend not to suffer from circular
referencing, so those stay put). The only other exception is
virDomainStateReason, which is only ever used directly rather than via
a pointer.
This patch is just straight code motion (all typedefs are listed in
the same order before and after the patch); a later patch will sort
things for legibility.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Checking that the derived class is larger than the requested parent
class saves us from some obvious mistakes, but as written, it does not
catch all the cases; in particular, it is easy to forget to update a
VIR_CLASS_NEW when changing the 'parent' member from virObject to
virObjectLockabale, but where the size checks don't catch that. Add a
parameter for one more layer of sanity checking.
It would be cool if we could get gcc to stringize typeof(parent) into
the string name of that type, so that we could confirm that the
precise parent class is in use rather than just a struct that happens
to have the same size as the parent class. But sizeof checks are
better than nothing.
Note that I did NOT change the fact that we require derived classes to
be larger (as the difference in size makes it easy to tell classes
apart), which means that even if a derived class has no functionality
to add (but rather exists for compiler-enforced type-safety), it must
still include a dummy member. But I did fix the wording of the error
message to match the code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
By default, qemu user's home dir points to '/' which shouldn't be used
at all. We therefore pass the HOME variable from the current variable
iff not running as SUID, which means that for systemd we never set it.
This patch makes sure, that for system QEMU this is always set to
libDir/<driver>, session mode is left untouched.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
For session mode, only XDG_CACHE_HOME is set, because we want to remain
integrating with services in user session, but for system mode, this
would have become reading/writing to '/' which carries the obvious issue
with permissions (also, '/' is the wrong location in 99.9% cases anyway).
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Some modules/libraries within QEMU could make use of the XDG_ vars when
writing their data to the disk. Define the most common XDG variables
and point them to the specific driver's libDir, i.e.
XDG_CACHE_HOME -> /var/lib/libvirt/<driver>/.cache
XDG_DATA_HOME -> /var/lib/libvirt/<driver>/.local/share
XDG_CONFIG_HOME -> /var/lib/libvirt/<driver>/.config
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The functions do basically exactly the same thing modulo few checks.
In case of virtio disks we check that the device is not multifunction as
that can't be unplugged at once. In case of USB and SCSI disks we
checked that no active block job is running.
The check for running blockjobs should have also been done for virtio
disks. By moving the multifunction check into the common function we fix
this case and also simplify the code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the correct type in switch and populate the missing cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We don't have any cleanup section, we can return the value directly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Based on recent list questions about the proposed addition of
virDomainCheckpointCreateXML(REDEFINE), it is worth adding some
clarification to the existing snapshot redefine documentation that is
serving as the basis for checkpoints.
Normal snapshot creation requires very few elements from the user XML
(libvirt can pick sane defaults for items that are omitted, and many
fields, including <domain>, are documented as readonly output fields
ignored on input, produced by drivers that track it). But during
REDEFINE, the API wants the complete XML produced by an earlier
virDomainSnapshotGetXMLDesc; as the domain definition has likely
changed since the snapshot was first created, libvirt is unable to
recreate a <domain> sub-element that matches the original output
representing the domain state at the time the snapshot was first
created. In fact, reverting without a <domain> sub-element is risky
enough that we had to add a FORCE flag for virDomainSnapshotRevert().
In short, we only support omitting domain for qemu because of
backwards-compatibility to snapshots created before 0.9.5 started
capturing <domain>; even though there are other drivers like vbox that
do not output <domain> because they have other reliable ways to
revert.
And based on the confusion caused when omitting <domain> from snapshot
XML, the initial design for checkpoints in later patches will make
<domain> a mandatory element during its REDEFINE.
[Side note: the fact that <domain> can appear in <domainsnapshot> is a
reason we cannot add a new API for a bulk listing or redefine of all
snapshots of a single domain in one XML call (for example, a 1M
<domain> XML * 16 snapshots explodes into 16M in a bulk form, which
gets difficult to send over RPC). Perhaps we could add a flag to
request that the <domain> sub-element be omitted on output, but such
output is no longer suitable for sane REDEFINE input.]
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
I had to inspect the code to learn whether a final virObjectUnref()
calls ALL dispose callbacks in child-to-parent order (akin to C++
destructors), or whether I manually had to call a parent-class dispose
when writing a child class dispose method. The answer is the
former. (Thankfully, since VIR_FREE wipes out pointers for safety,
even if I had guessed wrong, I probably would not have tripped over a
double-free fault when the parent dispose ran for the second time). I
also had to read the code to learn if a dispose method was even
mandatory (it is not, although getting NULL through VIR_CLASS_NEW
requires a macro). While at it, the VIR_CLASS_NEW macro requires that
the virObject component at offset 0 be reached through the name
'parent', not 'object'.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1623389
If a device is detached twice from the same domain the following
race condition may happen:
1) The first DetachDevice() call will issue "device_del" on qemu
monitor, but since the DEVICE_DELETED event did not arrive in
time, the API ends claiming "Device detach request sent
successfully".
2) The second DetachDevice() therefore still find the device in
the domain and thus proceeds to detaching it again. It calls
EnterMonitor() and qemuMonitorSend() trying to issue "device_del"
command again. This gets both domain lock and monitor lock
released.
3) At this point, qemu sends us the DEVICE_DELETED event which is
going to be handled by the event loop which ends up calling
qemuDomainSignalDeviceRemoval() to determine who is going to
remove the device from domain definition. Whether it is the
caller that marked the device for removal or whether it is going
to be the event processing thread.
4) Because the device was marked for removal,
qemuDomainSignalDeviceRemoval() returns true, which means the
event is to be processed by the thread that has marked the device
for removal (and is currently still trying to issue "device_del"
command)
5) The thread finally issues the "device_del" command, which
fails (obviously) and therefore it calls
qemuDomainResetDeviceRemoval() to reset the device marking and
quits immediately after, NOT removing any device from the domain
definition.
At this point, the device is still present in the domain
definition but doesn't exist in qemu anymore. Worse, there is no
way to remove it from the domain definition.
Solution is to note down that we've seen the event and if the
second "device_del" fails, not take it as a failure but carry on
with the usual execution.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
A caller might be interested in differentiating the cause for
error, especially if DeviceNotFound error occurred.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The aim of this function will be to fix return value of
qemuMonitorDelDevice() in one specific case. But that is yet to
come. Right now this is nothing but a plain substitution.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
We're using virFileFindResourceFull() to locate resources
nowadays, which makes exporting these information in the
environment unnecessary: see
virDriverLoadModule() for LIBVIRT_DRIVER_DIR
virLockManagerPluginNew() for LIBVIRT_LOCK_MANAGER_PLUGIN_DIR
virLockManagerLockDaemonConnectionNew() for VIRTLOCKD_PATH
doRemoteOpen() for LIBVIRTD_PATH
As further proof that we don't need to expose the information
this way anymore, we're not even exporting VIRTLOGD_PATH, which
would be necessary if virLogManagerConnect() didn't already
take care of that for us.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Any job which is able to provide statistics that can be queried via
virDomainGetJob{Stats,Info} has to set an appropriate statsType.
Without a proper statsType qemuDomainJobInfoToParams and
qemuDomainJobInfoToInfo have no idea what statistics should be sent to
the API caller.
https://bugzilla.redhat.com/show_bug.cgi?id=1688774
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Fill in a default volume type for every pool type, as reported
by the VolGetInfo API. Now that we cover the whole enum, report
an error for invalid values.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
We provide a custom configure option --enable-test-coverage and
'make cov' target to generate code coverage reports. However gnulib
already provides a 'make coverage' which 'just works' and doesn't
require a special configure option.
This drops our custom implementation in favor of 'make coverage'.
Reports are now output to cov/index.html
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
There is no way that qemu driver can work without being able to
format/parse JSON.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The basic idea of our configure script is to probe for things
rather than have them enabled by default. This is even more
visible in the next commit where configure fails if qemu driver
is enabled but no yajl is found.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The code tries to detect installed version of qemu to learn if it
uses HMP or QMP and enable YAJL based on that. Well, we support
only QMP and also minimal required version of qemu is 1.5.0 so
the check would have enabled yajl anyway.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a simple validation helper to perform the cputune period and
quota checks so that we can get rid of those repetitive chunks. Since
this is a validation helper, this patch also moves the checks from the
'parse' phase into the 'validation' phase.
Signed-off-by: Suyang Chen <dawson0xff@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Apparently this was necessary in the past because old versions
of autoconf/automake didn't make them available, but these
days all of the platforms we target include recent enough
autotools - as evidenced by the fact that, for example, we
already use abs_top_srcdir in tools/ despite the fact that
tools/Makefile.am is missing the same boilerplate.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
We already have code that defines all abs_* variables at the
top of tests/Makefile.am, so there is no point in redefining
them a second time (using a slightly different shell
incantation to boot).
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This code snippet has clearly been cargo-culted, and all its
instances can be safely dropped seeing as 1) a much better
way to handle the scenario in C programs would be to pass the
value via the preprocessor, and 2) the value is actually not
used anywhere after being defined.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
TEST_DRIVER_DIR is defined as "$(top_builddir)/src/.libs"; however,
as of commit bc6e206322, virDriverLoadModule() will search (the
absolute version of) that directory automatically, which means
passing it through the environment is no longer necessary.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
LIBVIRT_DRIVER_DIR is defined as (what is for all intents and
purposes equivalent to) "$(abs_top_builddir)/src/.libs"; however,
as of commit bc6e206322, virDriverLoadModule() will search that
directory automatically, which means passing it through the
environment is no longer necessary.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
An upcoming patch wants to reuse XML parsing of both unix and tcp
network host descriptions in the context of setting up a backup
NBD server. Make that easier by refactoring the existing parser.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We copy-and-paste a lot of our docs, as evidenced by the number of
*GetXMLDesc() functions which had the same unusual indentation and
missing capital in the second sentence of the returns paragraph.
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit 09eb1ae0 added a new enum type for xenbus, and adjusted
affected switch statements in the qemu driver, but failed to notice
that the vbox driver had a similar switch statement.
Signed-off-by: Eric Blake <eblake@redhat.com>
Add support in the domXML<->native config converter for
max_grant_frames. Include a test for the conversion.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Add support for setting max_grant_frames in libxl domain config
object and include a test to check that it is properly converted
from XML to libxl domain config.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
All Xen domains have a xenbus device. Implicitly add one if not
already explicitly specified in the domain config.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
xenbus is virtual controller (akin to virtio controllers) for Xen
paravirtual devices. Although all Xen VMs have a xenbus, it has
never been modeled in libvirt, or in Xen native VM config format
for that matter.
Recently there have been requests to support Xen's max_grant_frames
setting in libvirt. max_grant_frames is best modeled as an attribute
of xenbus. It describes the maximum IO buffer space (or DMA space)
available in xenbus for use by connected paravirtual devices. This
patch introduces a new xenbus controller type that includes a
maxGrantFrames attribute.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit a3ab6d42 changed the libvirtd profile to a named profile,
breaking the apparmor driver's ability to detect if the profile is
active. When the apparmor driver loads it checks the status of the
libvirtd profile using the full binary path, which fails since the
profile is now referenced by name. If the apparmor driver is
explicitly requested in /etc/libvirt/qemu.conf, then libvirtd fails
to load too.
Instead of only checking the profile status by full binary path,
also check by profile name. The full path check is retained in case
users have a customized libvirtd profile with full path.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
This helper performs a conversion from a "yes|no" string to a
corresponding boolean. This allows us to drop several repetitive
if-then-else string->bool conversion blocks.
Signed-off-by: Shotaro Gotanda <g.sho1500@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is mostly to avoid a memleak that is not a true memleak
anyway - prefixes will be freed by kernel upon test exit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
In theory, it's nice to have virFileWrapperAddPrefix() return a
value that indicates if the function succeeded or not. But in
practice, nobody checks for that and in fact blindly believes
that the function succeeded. Therefore, make the function return
nothing and just abort() if it would fail.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Luckily, the function returns only 0 or -1 so all the checks work
as expected. Anyway, our rule is that a positive value means
success so if the function ever returns a positive value these
checks will fail. Make them check for a negative value properly.
At the same time fix qemuDomainDetachExtensionDevice() reval
check. It is somewhat related to the aim of this patch.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The qemuFirmwareFetchConfigs() function is supposed to fetch all
firmware descriptions from paths defined by firmware.json
specification. This includes user's $HOME directory. However, it
was agreed that if libvirtd is running as privileged user then
his $HOME is ignored (thus $HOME is included in the search only
for regular users). Well, I got the condition wrong - it should
have been reversed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
With only a couple minor tweaks, we can make the existing
doCapsTest() functions with testQemuCapsIterate() and finally
remove the need to manually adjust the test programs every time
a new input file is introduced; moreover, this means that the
two lists can't possibly get out of sync anymore.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
This function iterates over a directory containing
capabilities-related data, extract some useful bits of
information from the file name, and calls a user-provided
callback.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
We're not using any of the functionality offered by the
module at the moment, but we will in just a second.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
This removes the awkard escaping and will allow us to perform
some more refactoring later on.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
We're using static string concatenation at the moment, but
that will no longer be a possibility in a bit.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
This removes a little duplication right away, and will allow
us to avoid introducing more later on.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
This is not particularly useful right now, but will allow us
to refactor some functionality later on.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
These functions don't do anything too interesting right now,
but will be extended later on.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
For snapshots, virsh already has a (shockingly naive [1]) client-side
topological sorter with the --tree option. But as a series of REDEFINE
calls must be presented in topological order, it's worth letting the
server do the work for us, especially since the server can give us a
topological sorting with less effort than our naive client
reconstruction.
[1] The XXX comment in virshSnapshotListCollect() about --tree being
O(n^3) is telling; https://en.wikipedia.org/wiki/Topological_sorting
is an interesting resource describing Kahn's algorithm and other
approaches for O(n) topological sorting for anyone motivated to use a
more elegant algorithm than brute force - but that doesn't affect this
patch.
For now, I am purposefully NOT implementing virsh fallback code to
provide a topological sort when the flag was rejected as unsupported;
we can worry about that down the road if users actually demonstrate
that they use new virsh but old libvirt to even need the fallback.
(The code we use for --tree could be repurposed to be such a fallback,
whether or not we keep it naive or improve it to be faster - but
again, no one should spend time on a fallback without evidence that we
need it.)
The test driver makes it easy to test:
$ virsh -c test:///default '
snapshot-create-as test a
snapshot-create-as test c
snapshot-create-as test b
snapshot-list test
snapshot-list test --topological
snapshot-list test --descendants a
snapshot-list test --descendants a --topological
snapshot-list test --tree
snapshot-list test --tree --topological
'
Without any flags, virsh does client-side sorting alphabetically, and
lists 'b' before 'c' (even though 'c' is the parent of 'b'); with the
flag, virsh skips sorting, and you can now see that the server handed
back data in a correct ordering. As shown here with a simple linear
chain, there isn't any other possible ordering, so --tree mode doesn't
seem to care whether --topological is used. But it is possible to
compose more complicated DAGs with multiple children to a parent
(representing reverting back to a snapshot then creating more
snapshots along those divergent execution timelines), where it is then
possible (but not guaranteed) that adding the --topological flag
changes the --tree output (the client-side --tree algorithm breaks
ties based on alphabetical sorting between two nodes that share the
same parent, while the --topological sort skips the client-side
alphabetical sort and ends up exposing the server's internal order for
siblings, whether that be historical creation order or dependent on a
random hash seed). But even if the results differ, they will still be
topologically correct.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
snapshot_conf does all the hard work, the qemu driver just has to
accept the new flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
snapshot_conf does all the hard work, the test driver just has to
accept the new flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Wire up support for VIR_DOMAIN_SNAPSHOT_LIST_TOPOLOGICAL in the
domain-agnostic support code.
Clients of snapshot_conf using virDomainSnapshotForEachDescendant()
are using a depth-first visit but with postfix visits of a given
node. Changing this to a prefix visit of the given node instantly
turns this into a topologically-ordered visit. (A prefix
breadth-first visit would also be topologically sorted, but that
requires a queue while our recursion naturally has a stack).
With that change, we now always have a topological sort for
virDomainSnapshotListAllChildren() regardless of the new public API
flag. Then with one more tweak, we can also get a topological rather
than a faster random hash visit for virDomainListAllSnapshots(), by
doing a descendent walk from our internal metaroot (there, we let the
public API flag control behavior, because a topological sort DOES
require more stack and slightly more time).
Note that virDomainSnapshotForEach() still uses a random hash visit;
we could change that signature to take a tri-state for random, prefix,
or postfix visit if we ever had clients that cared about the
distinctions, but for now, none of the drivers seem to care.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When using virDomainSnapshotCreateXML with the REDEFINE flag on
multiple snapshot metadata XML descriptions, we require that a child
cannot be redefined before its parent. Since libvirt already tracks a
DAG, it is more convenient if we can ensure that
virDomainListAllSnapshots() and friends have a way to return data in
an order that we can directly reuse, rather than having to
post-process the data ourselves to reconstruct the DAG.
Add VIR_DOMAIN_SNAPSHOT_LIST_TOPOLOGICAL as our new guarantee (well, a
guarantee at the time of the API call conclusion; there's always a
possible TOCTTOU race where someone redefining snapshots in between
the API results and the client actually using the list might render
the list out-of-date). Four listing APIs are directly benefitted by
the new flag; additionally, since we document that the older racy
ListNames interfaces should be sized by using the same flags on their
Num counterparts, the Num interfaces must document when they accept
(and ignore) the flag.
We could have supported the new flag just for the ListAll APIs (to
discourage people from using the older racy Num/ListNames APIs), but
it feels weird to special-case this flag value as being applicable to
only a subset of the API while all other List-related flags are
trivially applicable to all 6.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The firmware selection code will enable the feature if needed.
There's no need to require SMM to be enabled in that case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
And finally the last missing piece. This is what puts it all
together.
At the beginning, qemuFirmwareFillDomain() loads all possible
firmware description files based on algorithm described earlier.
Then it tries to find description which matches given domain.
The criteria are:
- firmware is the right type (e.g. it's bios when bios was
requested in domain XML)
- firmware is suitable for guest architecture/machine type
- firmware allows desired guest features to stay enabled (e.g.
if s3/s4 is enabled for guest then firmware has to support
it too)
Once the desired description has been found it is then used to
set various bits of virDomainDef so that proper qemu cmd line is
constructed as demanded by the description file. For instance,
secure boot enabled firmware might request SMM -> it will be
enabled if needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Implementation for yet another part of firmware description
specification. This one covers selecting which files to parse.
There are three locations from which description files can be
loaded. In order of preference, from most generic to most
specific these are:
/usr/share/qemu/firmware
/etc/qemu/firmware
$XDG_CONFIG_HOME/qemu/firmware
If a file is found in two or more locations then the most specific
one is used. Moreover, if file is empty then it means it is
overriding some generic description and disabling it.
Again, this is described in more details and with nice examples
in firmware.json specification (qemu commit 3a0adfc9bf).
However, there's one slight difference - for the root user the
home directory is not searched. This follows rules laid out by
similar look up processes, e.g. PKI x509 certs are not searched
in /root but they are looked for under /home.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Test firmware description parsing so far.
The test files come from three locations:
1) ovmf-sb-keys.json and ovmf-sb.json come from OVMF
package from RHEL-7 (with slight name change to reflect their
features in filename too),
2) bios.json and aavmf.json come from example JSON documents from
firmware.json from qemu's git (3a0adfc9bf),
3) ovmf.json is then copied from ovmf-sb.json and stripped
of SECURE_BOOT and REQUIRES_SMM flags, OVMF path change,
description update and machine type expanded for both pc and q35
machine types.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
The firmware description is a JSON file which follows
specification from qemu.git/docs/interop/firmware.json. The
description file basically says: Firmware file X is {bios|uefi},
supports these targets and machine types, requires these features
to be enabled on qemu cmd line and this is how you put it onto
qemu cmd line.
The firmware.json specification covers more (i.e. how to select
the right firmware) but that will be covered and implemented in
next commits.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The idea is that using this attribute users enable libvirt to
automagically select firmware image for their domain. For
instance:
<os firmware='efi'>
<type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
<loader secure='no'/>
</os>
<os firmware='bios'>
<type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
</os>
(The automagic of selecting firmware image will be described in
later commits.)
Accepted values are 'bios' and 'efi' to let libvirt select
corresponding type of firmware.
I know it is a good sign to introduce xml2xml test case when
changing XML config parser but that will have to come later.
Firmware auto selection is not enabled for any driver just yet so
any xml2xml test would fail right away.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This is going to extend virDomainLoader enum. The reason is that
once loader path is NULL its type makes no sense. However, since
value of zero corresponds to VIR_DOMAIN_LOADER_TYPE_ROM the
following XML would be produced:
<os>
<loader type='rom'/>
...
</os>
To solve this, introduce VIR_DOMAIN_LOADER_TYPE_NONE which would
correspond to value of zero and then use post parse callback to
set the default loader type to 'rom' if needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Except not really. At least for now.
In the future, the firmware will be selected automagically.
Therefore, it makes no sense to require the pathname of a
specific firmware binary in the domain XML. But since it is not
implemented do not really allow the path to be NULL. Only move
code around to prepare it for further expansion.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In some cases, the string representing architecture is different
in qemu and libvirt. That is the reason why we have
virQEMUCapsArchFromString() and virQEMUCapsArchToString(). So
far, we did not need them outside of qemu_capabilities code, but
this will change shortly. Expose them then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Move the code that (possibly) generates filename of NVRAM VAR
store into a single function so that it can be re-used later.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
It's meant for testing, not for production builds. Also we have a helper
for reporting OOM errors. Introduced by 23e0bf1c4e
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
In qemuxml2xmltest, both activeVcpus and blockjobs members
of the testInfo struct have been entirely unused ever since
commit d1a7fc8bb3.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
In local testing, I accidentally introduced a self-test failure,
and spent way too much time debugging it. Make sure the testsuite
log includes some hint as to why command option validation failed.
Lone exception: allocation failure is unlikely during self-test,
and if it happens, we are better off asserting (vsh.c can do this,
even if libvirt.so cannot).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Similarly to CAT, when you set some values in an group, remove the group and
recreate it, the previous values will be kept there. In order to not get values
from a previous setting (a previous VM, for example), we need to set them to
sensible defaults. The same way we do that for CAT, just set the same values as
the default group has.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
For CAT we calculate unallocated parts of the cache, however with MBA this does
not make sense as the purpose of that is to limit the bandwidth and the setting
is only proportional relative to bandwidth settings for other groups.
This means it makes sense to set the values to 100% even if there are other
groups with some allocations and that we don't need to find the available
(unallocated) bandwidth in all the groups.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
So far we are providing the suppressions file with a relative
path to valgrind. This apparently doesn't work on some distros
like Ubuntu and its derivates. Providing the absolute path fixes
the problem.
Signed-off-by: Shotaro Gotanda <g.sho1500@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The existing behavior for ppc64 guests is to always add a USB
keyboard and mouse combo if graphics are present; unfortunately,
this means any attempt to use a USB tablet will cause both pointing
devices to show up in the guest, which in turn will result in poor
user experience.
We can't just stop adding the USB mouse or start adding a USB tablet
instead, because existing applications and users might rely on the
current behavior; however, we can avoid adding the USB mouse if a USB
tablet is already present, thus allowing users and applications to
create guests that contain a single pointing device.
https://bugzilla.redhat.com/show_bug.cgi?id=1683681
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
These are similar to the existing simple headless guests, but
also include a graphical output and some input devices.
Input files were generated by running
$ virt-install \
--name guest --os-variant fedora29 \
--vcpus 4 --memory 4096 --disk size=5 \
--graphics vnc \
--print-xml
followed by minor tweaks.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Some devices (namely virtio-scsi, virtio-gpu, virtio-keyboard,
virtio-tablet and virtio-mouse, plus virtio-crypto which is
not supported by libvirt) don't follow the same rules as all
other virtio devices, which is something that ought to be
documented.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
While the parser and schema have to accept all possible models,
virtio-(non-)transitional models are only applicable to
type=passthrough and should be otherwise rejected.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Only PCI devices have '/sys/class/net/<ifname>/device/resource' so we
need to skip this check for all other network devices.
Without this patch and RDMA enabled libvirt will not detect any network
device that doesn't have the path above which includes 'lo', 'virbr',
'tun', etc.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1639258
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
If we pass XML to virDomainDefineXML API with these two elements:
...
<title></title>
<description></description>
...
libvirt correctly ignores these two elements and they will not appear
in the parsed XML.
However, if we use virDomainSetMetadata API and with "" as value for
title or description we will end up with the parsed XML that contains
these empty elements.
Let's fix the behavior of this API to behave the same as
virDomainDefineXML.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1518042
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When running virt-host-validate on an s390x host, the tool currently warns
that it is "Unknown if this platform has IOMMU support". We can use the
common check for entries in /sys/kernel/iommu_groups here, too, but it only
makes sense to check it if there are also PCI devices available. It's also
common on s390x that there are no PCI devices assigned to the LPAR, and in
that case there is no need for the PCI-related IOMMU, so without PCI devices
we should simply skip this test.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Fix an incorrect @xmlDesc comment, as well as adding more details
about which XML element should be root.
Signed-off-by: Eric Blake <eblake@redhat.com>
Add a new function to make it possible to parse a list of snapshots
at once. This is a counterpart to an earlier patch making it
possible to produce all snapshots in a single XML string, and
intentionally parses the same top-level element <snapshots> with
an optional attribute current='name'.
Note that since we know we started with no relations at all, and
since checking parent relationships per-snapshot is not viable as
we don't control which order the snapshots appear in, that we are
fine with doing a final pass to update all parent/child
relationships among the definitions.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Pull out the portion of virDomainSnapshotRefinePrep() that deals
with definition sanity into a separate helper routine that can
be reused with bulk redefine, leaving behind only the code
specific to loop checking and in-place updates that are only
needed in single-definition handling.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Right now, the only callers of qemuDomainSnapshotDiscardAllMetadata()
are right before freeing the virDomainSnapshotObjList, so it did not
matter if the list's metaroot (which points to all the defined root
snapshots) is left inconsistent. But an upcoming patch will want to
clear all snapshots if a bulk redefine fails partway through, in
which case things must be reset. Make this work by teaching the
existing virDomainSnapshotUpdateRelations() to be safe regardless of
the incoming state of the metaroot (since we don't want to leak that
internal detail into qemu code), then fixing the qemu code to use
it after deleting all snapshots. Additionally, the qemu code must
reset vm->current_snapshot if the current snapshot was removed,
regardless of whether the overall removal succeeded or failed later.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add a new function to output all of the domain's snapshots in one
buffer.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out an internal helper that produces format into a
virBuffer, similar to what domain_conf.c does, and making
the next patch easier to write.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
virDomainSnapshotDefFormat currently takes two sets of knobs:
an 'unsigned int flags' argument that can currently just be
VIR_DOMAIN_DEF_FORMAT_SECURE, and an 'int internal' argument used as
a bool to determine whether to output an additional element. It
then reuses the 'flags' knob to call into virDomainDefFormatInternal(),
which takes a different set of flags. In fact, prior to commit 0ecd6851
(1.2.12), the 'flags' argument actually took the public
VIR_DOMAIN_XML_SECURE, which was even more confusing. Let's borrow
from the style of that earlier commit, by introducing a function
for translating from the public flags (VIR_DOMAIN_SNAPSHOT_XML_SECURE
was just recently introduced) into a new enum specific to snapshot
formatting, and adjust all callers to use snapshot-specific enum
values when formatting, and where the formatter now uses a new
variable 'domainflags' to make it obvious when we are translating
from snapshot flags back to domain flags. We don't even have to
use the conversion function for drivers that don't accept the
public VIR_DOMAIN_SNAPSHOT_XML_SECURE flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Clean up the previous patch which abused switch on virDomainState
while working with a variable containing virDomainSnapshotState, by
converting the two affected switch statements to now use the right
enum.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The existing virDomainSnapshotState is a superset of virDomainState,
adding one more state (disk-snapshot) on top of valid domain states.
But as written, the enum cannot be used for gcc validation that all
enum values are covered in a strongly-typed switch condition, because
the enum does not explicitly include the values it is adding to.
Copy the style used in qemu_blockjob.h of creating new enum names
for every inherited value, and update most clients to use the new
enum names anywhere snapshot state is referenced. The exception is
two switch statements in qemu code, which instead gain a fixme
comment about odd type usage (which will be cleaned up in the next
patch). The rest of the patch is fairly mechanical (I actually did
it by temporarily s/state/xstate/ in snapshot_conf.h to let the
compiler find which spots in the code used the field, did the
obvious search and replace in those functions, then undid the rename).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuDomainSnapshotWriteMetadata does not modify the directory name,
and making it const-correct aids in writing an upcoming patch.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The current qemu code rejects the combination of the two flags
VIR_DOMAIN_SNAPSHOT_CREATE_LIVE in tandem with
VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE, but rather late in the cycle
(after the snapshot was already parsed), and with a rather confusing
message (complaining that live snapshots require external storage,
even if the redefined snapshot already declares external storage).
Hoist the rejection message to occur earlier (before parsing any
XML, which also aids upcoming patches that will implement bulk
redefine), and with a more typical error message about mutually
exclusive flags.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Failure would have occurred for @ctxt before in callers' other
virXPath calls and @def derefs.
Found by Coverity due to commit 66a508d2 using VIR_XPATH_NODE_AUTORESTORE
to access @ctxt before the if condition. The @def was noted by review.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If shutting down a container via setting the runlevel fails, the
control jumps right onto endjob label and doesn't even try
sending the signal. If flags allow it, we should try both
methods.
Signed-off-by: Maxim Kozin <kolomaxes@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We can use STRNEQ() instead of STRNEQLEN() since we're only
interested in the trailing part of the string and we've
already verified that the length of file, name and suffix
are those we expect.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's a predicate, so bool is the appropriate return type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
While this function is not, strictly speaking, a predicate,
it still mostly behaves like one as evidenced by the vast
majority of its callers, so using bool rather than int as
the return type makes sense.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's a predicate, so bool is the appropriate return type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Since qemu 2.13 reports the target architecture in a property called
'target' additionally to the property 'arch', that has been used in
qemu 2.12 in the response data of 'query-cpus-fast'.
Libvirts monitor code prefers the 'target' property over 'arch'.
At least for s390(x), target is reported as 's390x' while arch is 's390'.
In a later step a comparison is performed against 's390' which fails for
qemu 2.13 and later.
In consequence the architecture specific data for s390 won't be extracted
from the returned data, leading to incorrect values being reported by
virsh domstats --vcpu.
Changing to check explicitly for 's390' and 's390x'.
Signed-off-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Problem is that if there are no signatures for a CPU, then we
still allocate cpu->signatures (even though with size 0). Later,
we access cpu->signatures[0] if cpu->signatures is not NULL.
Invalid read of size 4
at 0x5F439D7: virCPUx86Translate (cpu_x86.c:2930)
by 0x5F3C239: virCPUTranslate (cpu.c:927)
by 0x57CE7A1: qemuProcessUpdateGuestCPU (qemu_process.c:5870)
...
Address 0xf752d40 is 0 bytes after a block of size 0 alloc'd
at 0x4C30EC6: calloc (vg_replace_malloc.c:711)
by 0x5DBDE4E: virAllocN (viralloc.c:190)
by 0x5F3E4FA: x86ModelCopySignatures (cpu_x86.c:990)
by 0x5F3E60F: x86ModelCopy (cpu_x86.c:1008)
by 0x5F3E7CB: x86ModelFromCPU (cpu_x86.c:1068)
by 0x5F4397E: virCPUx86Translate (cpu_x86.c:2922)
by 0x5F3C239: virCPUTranslate (cpu.c:927)
by 0x57CE7A1: qemuProcessUpdateGuestCPU (qemu_process.c:5870)
...
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
There is a lot of documentation in the comments about how PPC64 handles
passthrough VFIO devices to calculate the @memLockLimit. And more will
be added with the PPC64 NVLink2 support code.
Let's remove the PPC64 code from qemuDomainGetMemLockLimitBytes()
body and put it into a helper function. This will simplify the
flow of qemuDomainGetMemLockLimitBytes() that handles all the other
platforms and improves readability of the PPC64 specifics.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
@passthroughLimit is being calculated even if @usesVFIO is false. After
that, an if-else conditional is used to check if we're going to sum it
up with @baseLimit.
This patch initializes @passthroughLimit to zero and always returns
@memKB = @baseLimit + @passthroughLimit. The conditional is then used to
calculate @passthroughLimit if @usesVFIO == true. This results in some
cycles being spared for the @usesVFIO == false scenario, but the real
motivation is to make the code simpler to add an alternative formula to
calculate @passthroughLimit for NVLink2.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
It may happen that both symbols are present. Especially when
chaining mocks. For instance if a test is using virpcimock and
then both stat and __xstat would be present in the address space
as virpcimock implements both. Then, if the test would try to use
say virfilewrapper (which again uses VIR_MOCK_REAL_INIT_ALT() to
init real_stat and real___xstat) it would find stat() from
virpcimock and stop there. The virfilewrapper.c:real___xstat
wouldn't be initialized and thus it may result in a segfault.
The reason for segfault is that sys/stat.h may redefine stat() to
call __xstat().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Google is shutting down Google+, with no replacement, in the very near
future so we are losing the Libvirt community group there.
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for XFS reflink clone was added in:
commit 8ed874b39b
Author: Julio Faracco <jcfaracco@gmail.com>
Date: Fri Jul 6 10:43:01 2018 -0300
storage: Rename btrfsCloneFile to support other filesystems.
commit 2e11298f93
Author: Julio Faracco <jcfaracco@gmail.com>
Date: Fri Jul 6 10:43:00 2018 -0300
configure: Adding XFS library/headers check.
But these patches missed that the xfs/xfs.h header is not installed
unless you have xfsprogs-devel present.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Capabilities should not duplicate data that are obvious from our
documentation and will not change with different QEMU binaries
or the way how we compile libvirt.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When dealing with internal paths we don't need to worry about
whether or not suffixes are lowercase since we have full control
over them, which means we can avoid performing case-insensitive
string comparisons.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This is the case-sensitive counterpart of the existing
virStringHasCaseSuffix() function.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
A few trivial whitespace changes are squashed in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
In addition to the obvious s/File/String/, also tweak the name
to make it clear that the presence of the suffix is verified
using case-insensitive comparison.
A few trivial whitespace changes are squashed in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
In these cases the check that is removed has been done a few
lines above already (as can even be seen in the context). Drop
them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit a3ab6d42 changed the libvirtd profile to a named profile
but neglected to accommodate the change in the qemu profile
ptrace and signal rules. As a result, libvirtd is unable to
signal confined qemu processes and hence unable to shutdown
or destroy VMs.
Add ptrace and signal rules that reference the libvirtd profile
by name in addition to full binary path.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
Introduce the API to expose the storage pool capabilities along
with all the remote munglement required to hook up the client.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add a new test for the storage pool capabilities. There will be
one test mocked with every backend available (full) and one where
only the file system pool is available.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add support to format the storage pool capabilities using
the virStoragePoolTypeInfoPtr to determine what capabilities
exist for the various pools and the driver capabilities to
determine whether the pool is compiled in and supported.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Define a schema for the storage pool capabilities along with
a test to show the general format.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1581670
During storage driver backend initialization, let's save
which backends are available in the storage pool capabilities.
In order to format those, we need add a connectGetCapabilities
processor to the storageHypervisorDriver. This allows a storage
connection, such as "storage:///system" to find the API and
format the results, such as:
virsh -c storage:///system capabilities
<capabilities>
<pool>
<enum name='type'>
<value>dir</value>
<value>fs</value>
<value>netfs</value>
<value>logical</value>
<value>iscsi</value>
<value>iscsi-direct</value>
<value>scsi</value>
<value>mpath</value>
<value>disk</value>
<value>rbd</value>
<value>sheepdog</value>
<value>gluster</value>
<value>zfs</value>
</enum>
</pool>
</capabilities>
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Introduce the bare bones functions to processing capability
data for the storage driver.
Since there will be no need for the <host> output, we need
to filter that data.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Fix the ZFS Valid Volume Format Types label and add the
Valid pool format types for Vstorage pools.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The ZFS pool is documented as not using pool format types, so remove
the defaultFormat value.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The multipath pool is documented as not using the volume type,
so let's just remove it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The iscsi and iscsi-direct pools are documented as not using
the volume type, so let's just remove it. Besides it would
have produced bad output since formatting uses the Disk types.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The scsi pool is documented as not using the volume type,
so let's just remove it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The rbd pool is documented as not using the volume type,
so let's just remove it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The sheepdog pool is documented as not using the volume type,
so let's just remove it. Besides it would have produced bad
results since the defaultType is FILE but the formatting used
the Disk types.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Rather than moving the XPath root node in the caller and then still
passing it down, make sure that the callees move the node themselves.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove logic necessary to figure out whether to format the 'features'
element by using virXMLFormatElement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement for the formatting which allows us to avoid
looking through the array to see if any feature is enabled.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If none of the 'capabilities' features are enabled we'd still format the
opening and closing tag for the <capabilities element.
The implementation is suboptimal but will be refactored for a better
approach. This is done prior to the refactor to show that tests are not
impacted.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use VIR_AUTOCLEAN to avoid leaking the buffer on error path and get rid
of resetting mid loop since virXMLFormatElement does the reset
internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'i' is always in range of the enum, thus the name is always populated by
virDomainFeatureTypeToString.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
These buffers are used temporarily for some of the partial formatters
but not globally. Prefix the name with 'tmp' to be explicit.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Pure code motion of code for formatting domain features to a function
called virDomainDefFormatFeatures. Best viewed with the '--patience'
option for git show.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Split out the code into a separate function named
virDomainDefFormatBlkiotune and use virXMLFormatElement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Refactor the function to use the XML formatting aid and use automatic
cleaning to simplify the control flow.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function does not transfer errors from 'attrBuf' and 'childBuf'
arguments into 'buf', but rather reports them right away, thus we need
to make sure that it's always checked.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The qemuMigrationParamsApply internal API was designed to apply all
migration parameters and capabilities before we start to migrate a
domain. While migration parameters are only passed to QEMU when we
explicitly want to set a specific value, capabilities are always either
enabled or disabled.
Thus when this API is called outside migration job, e.g., via a call to
qemuDomainMigrateSetMaxSpeed with VIR_DOMAIN_MIGRATE_MAX_SPEED_POSTCOPY
flag, we would call migrate-set-capabilities and disable all
capabilities. However, changing capabilities while migration is already
running does not make sense and our code should never be trying to do
so. In fact QEMU even reports an error if migrate-set-capabilities is
called during migration and qemuDomainMigrateSetMaxSpeed would fail
with:
internal error: unable to execute QEMU command
migrate-set-capabilities: There's a migration process in progress
With this patch qemuMigrationParamsApply never tries to call
migrate-set-capabilities outside of migration job. When the capabilities
bitmap is all zeros (which is its initial value after
qemuMigrationParamsNew), we just skip the command. But when any
capability bit is set to 1 by a non-migration job, we report an error to
highlight a bug in our code.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Further testing with more devices showed that we sometimes have a
different depth of pci device paths when accessing sysfs for device
attributes.
But since the access is limited to a set of filenames and read only it
is safe to use a wildcard for that.
Related apparmor denies - while we formerly had only considered:
apparmor="DENIED" operation="open"
name="/sys/devices/pci0000:00/0000:00:02.1/uevent"
requested_mask="r"
We now also know of cases like:
apparmor="DENIED" operation="open"
name="/sys/devices/pci0000:00/0000:00:03.1/0000:1c:00.0/uevent"
requested_mask="r"
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1817943
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Further testing with different devices showed that we need more rules
to drive gl backends with nvidia cards. Related denies look like:
apparmor="DENIED" operation="open"
name="/usr/share/egl/egl_external_platform.d/"
requested_mask="r"
apparmor="DENIED" operation="open"
name="/proc/modules"
requested_mask="r"
apparmor="DENIED" operation="open"
name="/proc/driver/nvidia/params"
requested_mask="r"
apparmor="DENIED" operation="mknod"
name="/dev/nvidiactl"
requested_mask="c"
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1817943
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1685151
This reverts commit e4a969092b.
Now that drivers may call virConnectOpen() on secondary drivers, it
doesn't make much sense to have autostart separated from driver
initialization callback. In fact, it creates a problem because one
driver during its initialization might try to fetch an object from
another driver but since the object is yet to be autostarted the fetch
fails. This has been observed in reality: qemu driver performs
qemuProcessReconnect() during qemu's stateInitialize phase which may
call virDomainDiskTranslateSourcePool() which connects to the storage
driver to look up the volume. But the storage driver did not autostart
its pools yet therefore volume lookup fails and the domain is killed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The stateAutoStart callback will go away shortly. Therefore, move
the autostart call into state initialize callback.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The order in which drivers are registered is important because
their stateInitialize and stateAutoStart callback are called in
that order. Well, stateAutoStart is going away and therefore if
there is some dependency between two drivers (e.g. when
initializing storage driver expects secret driver to be available
already), the registration of such drivers must happen in correct
order.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This fixes several CPUs which were incorrectly detected as
Skylake-Client.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This fixes several CPUs which were incorrectly detected as a different
CPU model.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The signature computation code is not too complicated and it will likely
never change so testing it is not very important. We do it mostly for a
nice side effect of easily accessible signature numbers for all CPU
data files.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The family/model numbers are nice for humans or for comparing with
/proc/cpuinfo, but sometimes there's a need to see the CPUID
representation of the signature. Let's add it into a comment for each
signature in out cpu_map XMLs as the conversion is not exactly
straightforward.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function exports the functionality of x86DataToSignatureFull and
x86MakeSignature to the test suite.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Most places in qemu_capabilities.c which call virQEMUCapsGetHostCPUData
actually need qemuMonitorCPUModelInfoPtr from QEMU caps. Let's use the
wrapper introduced in the previous commit instead.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a simple wrapper around virQEMUCapsGetHostCPUData usable in
tests for getting qemuMonitorCPUModelInfoPtr from QEMU caps.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code for transforming qemuMonitorCPUModelInfo data from QEMU into
virCPUDefPtr consumable by virCPU* APIs was hidden inside
virQEMUCapsInitCPUModelX86. This patch moves it into a new function to
make it usable in tests.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The log message may be useful when debugging why a specific CPU model
was selected for a given set of CPUID data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
CPU signatures in the cpu_map serve as a hint for CPUID to CPU model
matching algorithm. If the CPU signatures matches any CPU model in the
cpu_map, this model will be the preferred one.
This works out well and solved several mismatches, but in real world
CPUs which should match a single CPU model may be produced with several
different signatures. For example, low voltage Broadwell CPUs for
laptops and Broadwell CPUs for servers differ in CPU model numbers while
we should detect them all as Broadwell CPU model.
This patch adds support for storing several signatures for a single CPU
model to make this hint useful for more CPUs. Later commits will provide
additional signatures for existing CPU models, which will correct some
results in our CPU test suite.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In preparation for storing several CPU signatures in a single CPU model,
we need to turn virCPUx86Model's signature into an array of signatures.
The parser still hardcodes the number of signatures to 1, but the
following patch will drop this limit.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a helper for copying CPU signature between two CPU models.
It's not very useful until the way we store signatures is changed in the
next patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Having multiple CPU model definitions with the same name could result in
unexpected behavior.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseFeatures function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseVendor function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseSignature function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseAncestor function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The tests/cputestdata/cpu-parse.sh would produce JSON files with QEMU
replies which wouldn't pass syntax-check. Let's fix this by not emitting
an extra new line after reformatting the JSON file.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some test cases are only executed using WHEN_INACTIVE, and the
output file name should reflect this for clarity.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are a few cases where we are using either WHEN_ACTIVE
or WHEN_INACTIVE even though WHEN_BOTH would work perfectly
fine: for those, start using the simpler DO_TEST() macro.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
disk-mirror-old has different output file for the active and
inactive parts, which should be named accordingly; on the other
hand, both output files for disk-backing-chains-noindex are
identical, so it makes sense to only keep around one and remove
the (in-)active suffix.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
After commits e2087c2 and ec0793de older GCC started act very smart and
complain about potentially uninitialized variable, which existed prior
to these patches + even if the affected vars were left uninitialized the
function responsible for filling them in would have failed with NULL
being returned which the caller has always handled carefully.
Although GCC complained only about a single variable, let's initialize
all of them so as to prevent any further potential breakages.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Add <controller type='scsi' model handling for virtio transitional
devices. Ex:
<controller type='scsi' model='virtio-transitional'/>
* "virtio-transitional" maps to qemu "virtio-scsi-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-scsi-non-transitional"
The naming here doesn't match the pre-existing model=virtio-scsi.
The prescence of '-scsi' there seems kind of redundant as we have
type='scsi' already, so I decided to follow the pattern of other
patches and use virtio-transitional etc.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<input> devices lack the model= attribute which is used by
most other device types. To eventually support
virtio-input-host-pci-{non-}traditional in qemu, let's add
a standard model= attribute. This just adds the domain_conf
wiring
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<filesystem> devices lack the model= attribute which is used by
most other device types. To eventually support
virtio-9p-pci-{non-}traditional in qemu, let's add a standard
model= attribute. The accepted values are:
- virtio
- virtio-transitional
- virtio-non-transitional
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
qemu vhost-scsi devices map to XML roughly like:
<hostdev mode='subsystem' type='scsi_host'>
<source protocol='vhost' wwpn=X/>
</hostdev>
To support vhost-scsi-pci-{non-}traditional in qemu, we
need to to extend the SCSI Host hostdev XML to handle
model= value. This matches the XML model= format used
for mediated devices. This is just the domain_conf bits
and some XML test cases.
Use of virtio-X naming here does not match the hostdev
protocol=vhost nor does it match the qemu vhost-X device
naming, however it's more consistent with all other
model= names in this area, and also matches the
inconsistency of <vsock> devices which use model=virtio
but map to vhost-vsock on the qemu commandline
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add new <disk> model values for virtio transitional devices. When
combined with bus='virtio':
* "virtio-transitional" maps to qemu "virtio-blk-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-blk-pci-non-transitional"
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<disk> devices lack the model= attribute which is used by
most other device types. bus= mostly acts as one, but it
serves other purposes too like determing what target=
prefix to use, and for matching against controller type=
values.
Extending bus= to handle additional virtio transitional
devices will complicate apps lives, and it isn't a clean
mapping anyways. So let's bite the bullet and add a new
<disk model=X/> attribute, and wire up common handling
for virtio and virtio-{non-}transitional
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add a single QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL that
will be set if any of the following qemu devices are found:
virtio-blk-pci-transitional
virtio-blk-pci-non-transitional
virtio-net-pci-transitional
virtio-net-pci-non-transitional
vhost-scsi-pci-transitional
vhost-scsi-pci-non-transitional
virtio-rng-pci-transitional
virtio-rng-pci-non-transitional
virtio-9p-pci-transitional
virtio-9p-pci-non-transitional
virtio-balloon-pci-transitional
virtio-balloon-pci-non-transitional
vhost-vsock-pci-transitional
vhost-vsock-pci-non-transitional
virtio-input-host-pci-transitional
virtio-input-host-pci-non-transitional
virtio-scsi-pci-transitional
virtio-scsi-pci-non-transitional
virtio-serial-pci-transitional
virtio-serial-pci-non-transitional
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1658504
This function is called when a domain is starting up (in qemu
driver that is when qemu cmd line is generated). It is used to
translate <disk type='volume'/> to something usable by filling in
virStorageSource (e.g. fetching disk path, or some connection URI
for a network FS). But some of these info are not stored in
status XML and thus the function is called on
qemuProcessReconnect too to reconstruct runtime data. But this
poses a problem because after the first run the mode is set to
'direct', but in the second run this triggers a failure because
mode is valid only for 'iscsi' volumes and not 'iscsi-direct'
ones.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Rewrite the code to make usage of some VIR_AUTOFREE logic.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that we're using VIR_AUTOFREE there's quite a bit of clean up
possible for now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities for VIR_FREE consumers.
In some cases adding or removing blank lines for readability.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
In preparation for VIR_AUTOFREE usage, let's remove a couple
of unused variables so that clang compilations won't fail.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that we're using VIR_AUTOPTR(virBitmap) there's a couple of methods
that we can clean up some now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities for virBitmapPtr.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
In preparation for using auto free mechanism, change to using the
VIR_STEAL_PTR on @def to @ret and of course be sure to properly clean
up @def in cleanup.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use the new helper when moving around the current node of the XPath
context.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Quite a few parts modify the XPath context current node to shift the
scope and allow easier queries. This also means that the node needs
to be restored afterwards.
Introduce a macro based on 'VIR_AUTOCLEAN' which adds a local structure
on the stack remembering the original node along with a function which
will make sure that the node is reset when the local structure leaves
scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The helper function is used by the VIR_AUTOUNREF macro. Prior art is to
clear the pointer even if the variable goes out of scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'd free only the first element of the vector leaking the rest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We don't need it as there's a separate macro for auto-freeing of string
lists.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use of VIR_AUTOPTR and virString is confusing as it's a list and not a
single pointer. Replace it by VIR_AUTOSTRINGLIST as string lists are
basically the only sane NULL-terminated list we can have.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Similar to VIR_AUTOPTR, VIR_AUTOSTRINGLIST defines a list of strings
which will be freed if the pointer is leaving scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Mention my snapshot bug fixes, and the corresponding virsh command-line
parse tweak I added while working on the snapshot bug fixes.
Signed-off-by: Eric Blake <eblake@redhat.com>
The existing qemu snapshot code has a slight bug: if the domain
is currently pmsuspended, you can't use the _REDEFINE flag even
though the current domain state should have no bearing on being
able to recreate metadata state; and conversely, you can use the
_REDEFINE flag to create snapshot metadata claiming to be
pmsuspended as a bypass to the normal restrictions that you can't
create an original qemu snapshot in that state (the restriction
against pmsuspend is specific to qemu, rather than part of the
driver-agnostic snapshot_conf code).
Fix this by checking the snapshot state (when redefining) instead
of the domain state (which is a subset of snapshot states).
Fixes the second problem mentioned in https://bugzilla.redhat.com/1680304
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Both block_size and nb_block are unit32_t and multiplying them overflows
at 4GiB.
Moreover, the iscsi_*10_* APIs use 32bit number of blocks and thus they
can only address images up to 2TiB with 512B blocks. Let's use 64b
iscsi_*16_* APIs instead.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When fetching LUNs from iscsi server the
virISCSIDirectReportLuns() is called. This function does some
libiscsi calls and then calls virISCSIDirectRefreshVol() over
each LUN found. It's unfortunate that the latter calls
virStoragePoolObjClearVols() as we lose all LUNs processed
in previous iterations.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Some of the recent entries deviated from the established
style used throughout the file, so let's fix them.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Jirka reported a bug that with every 'virsh pool-refresh' an
iscsi-direct pool would grow and grow. The problem is that
virISCSIDirectRefreshVol() only adds to def->capacity and
def->allocation but nothing clears it out to begin with.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
For consistency with other error messages, and the fact that
the object is always called a virDomainSnapshot rather than
a mere virSnapshot, include the word "domain" in the error
message.
Suggested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 28f8dfdc (1.0.0) added a flag to virDomainGetXMLDesc, but
failed to document its effects. And considering that the
MIGRATABLE flag has been the source of past bugs (CVE-2014-7823,
fixed in commit b1674ad5 (1.2.11), or even cf2d4c60 (1.2.13) where
flag mismatch broke virsh edit), make the wording wishy-washy
enough to discourage using the flag casually, by mentioning that
the resulting XML is more for internal use than for validation
against the schema.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Due to historical back-compat, bare 'virsh snapshot-create-as'
favors internal snapshots (but can't be used on domains with raw
storage), while 'virsh snapshot-create-as --disk-only' favors
external snapshots. What's more, snapshots created with
--disk-only while the domain was running are marked as snapshot
state 'disk-snapshot', while snapshots created while the domain
was offline are marked as snapshot state 'shutdown' (a
'disk-snapshot' image might not be quiescent, while a 'shutdown'
snapshot always is).
But this leads to some interesting problems: if we create a
--disk-only snapshot of an offline guest, and then immediately try
to 'virsh snapshot-create --redefine' using the resulting XML to
overwrite the existing snapashot in place, things silently succeed,
but 'virsh snapshot-create --redefine --disk-only' fails with an
error message that the snapshot state is not 'disk-only'. Worse,
if we delete the snapshot metadata first and then try to recreate
things, omitting --disk-only fails because the verification code
wants to force the default of an internal snapshot (which doesn't
work with raw disks), and using --disk-only still fails because the
snapshot XML is not 'disk-only' - making it impossible to recreate
the snapshot metadata (or to transfer it from one libvirtd host to
another). Ideally, the presence or absence of the --disk-only
flag, and the presence or absence of an existing snapshot being
overwritten, shouldn't matter; if the XML is valid for one
situation, it should always be valid to redefine the metadata for
that snapshot.
Fix things by uniformly using virDomainSnapshotDefIsExternal()
(caching the results up front, and eliminating other 'if' clauses
now rendered redundant) when deciding whether the XML being
requested for redefinition should permit external or force internal
state capture (we got it right in only one out of three places in
the function).
See also https://bugzilla.redhat.com/1680304; this fixes the
domain-agnostic problems mentioned there, but another patch is
needed to fix further oddities with the qemu driver. I did not
check for sure when the problems were introduced (git blame puts
some affected hunks as far back as 1.0.0), but it was definitely
been broken even before when commit 670e86bf (1.1.4) factored
redefine prep out of qemu code into the common snapshot_conf code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Upcoming patches plan to introduce virDomainCheckpointPtr as a new
object for use in incremental backups, along with documentation on
how incremental backups differ from snapshots. But first, we need
to rename any existing mention of a 'system checkpoint' to instead
be a 'full system snapshot', so that we aren't overloading
the term checkpoint.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The previous patch made it possible to split multiple commands by
adding newline, but not to split a long single command. The sequence
backslash-newline was being used as if it were a quoted newline
character, rather than completely elided the way the shell does.
Again, add more tests, although this time it seems more like I am
suffering from a leaning-toothpick syndrome with all the \.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
I wanted to do a demonstration with virsh batch mode, which
takes multiple commands all packed into a single argument:
$ virsh -c test:///default 'echo a; echo b;'
a
b
but that produced a really long line, so I tried to make it
more legible:
$ virsh -c test:///default '
echo a;
echo b;
'
error: unknown command: '
'
Let's be more like the shell, and treat unquoted newline as a
command separator just as we do for semicolon. In fact, with
that, I can even now mix styles:
$ virsh -c test:///default '
echo a; echo b
echo c
'
a
b
c
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
vcpupin will fail when maxvcpus is larger than current
vcpu:
virsh vcpupin win7 --vcpu 0 --cpulist 5-6
error: Requested operation is not valid: cpu affinity is not supported
win7 xml in the command above is like below:
...
<vcpu current="3" placement="static">8</vcpu>
...
The reason is vcpu[3] and vcpu[4] have zero tids and should not been
compared as valid situation in qemuDomainRefreshVcpuInfo().
This issue is introduced by commit 34f7743, which fix recording of vCPU
pids for MTTCG.
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The structure used to handle network entries was based on 'if,else'
conditions. This commit converts this ugly structure into a switch to
clearify each option of the handler.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Extract out the network "type" processing into it's own method
rather than inline within lxcNetworkParseDataSuffix.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit removes the full network entry setting: "lxc.network.X" to
type only. Like "type", "name", "flags", etc. This will handle entries
regardless of whether they are prefixed by "lxc.network." (today) or
"lxc.net.X." (the future).
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Refactor lxcNetworkWalkCallback to be a simple method to handle
both possible network settings with indexes or the simple one. It is
better the decouple the whole algorithm to parse data to only parse
which entry type libvirt is handling.
The new method is responsible to verify is the settings correspond to
network entry. Right now, it is only verifying "lxc.network.", but in
the future, it can be used to verify "lxc.net.X." too. Any other case
would be rejected.
On the other hand, the idea here is working only with types. If we know
that entry is part of network settings, after we just need to know which
type is. It keeps the handler simple.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The new method called lxcNetworkParseDataIPs() is responsible to handle
IPv{4,6} settings now. The idea is let lxcNetworkWalkCallback() method
handle all entries related to network definition only.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
libvirt_iohelper is used internally by the virFileWrapperFd APIs;
more specifically, in the QEMU driver we have the doCoreDump() and
qemuDomainSaveMemory() helper functions as users, and those in turn
end up being called by the implementation of several driver APIs.
By calling virReportError() if libvirt_iohelper has failed, we
overwrite whatever generic error message QEMU might have raised
with the more useful one generated by the helper program.
After this commit, the user will be able to see the error directly
instead of having to dig in the journal or libvirtd log.
https://bugzilla.redhat.com/show_bug.cgi?id=1578741
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virFileWrapperFdFree(), like all free functions, is supposed
to only release allocated resources, so error reporting is
better suited for virFileWrapperFdClose().
This reverts commit b0c3e93180.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Right now we're reporting errors in virFileWrapperFdFree(),
but that's hardly the appropriate place to do so, as free
functions are supposed to do nothing more than release
allocated resources.
We want to move that code back into virFileWrapperFdClose(),
but before we can do that we need to make sure the function
is actually called every time we're done processing the
wrapped file. The cleanup path is the obvious candidate.
In a couple of cases we can just move the call, but for the
remaining ones we need to duplicate it instead in order not
to alter the existing behavior. We do, however, make sure
that in all cases a failure to properly close the wrapper
results in the overall operation being reported as failed.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'll want to use this function in the cleanup path soon,
and in order to be able to do that we need to make sure we
can call it multiple times on the same virFileWrapperFd
without side effects.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Change fb01e1a44 "virt-aa-helper: generate rules for gl enabled
graphics devices" implemented the detection for gl enabled
devices in virt-aa-helper. But further testing showed
that it will need much more access for the full gl stack
to work.
Upstream apparmor just recently split those things out and now
has two related abstractions at
https://gitlab.com/apparmor/apparmor/blob/master:
- dri-common at /profiles/apparmor.d/abstractions/dri-common
- mesa: at /profiles/apparmor.d/abstractions/mesa
If would be great to just include that for the majority of
rules, but they are not yet in any distribution so we need
to add rules inspired by them based on the testing that we
can do.
Furthermore qemu with opengl will also probe the backing device
of the rendernode for attributes which should be safe as
read-only wildcard rules.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1815452
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Change fb01e1a44 "virt-aa-helper: generate rules for gl enabled
graphics devices" implemented the detection for gl enabled
devices in virt-aa-helper. But it will in certain cases e.g. if
no rendernode was explicitly specified need to read /dev/dri
which it currently isn't allowed.
Add a rule to the apparmor profile of virt-aa-helper itself to
be able to do that.
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Add a bhyveDomainDefNeedsISAController() helper function
which by domain configuration determines whether LPC controller is
required or not.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Implement the MSRs ignore unknown reads and writes feature
that's specified using:
<features>
...
<msrs unknown='ignore'>
...
</features>
in the domain XML.
In bhyve, it's just passing '-w' command line argument to the bhyve(8)
executable.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Introduce the 'msrs' feature element that controls Model Specific
Registers related behaviour. At this moment it allows only
single tunable attribute "unknown":
<msrs unknown='ignore|fault'/>
Which tells hypervisor to ignore accesses to unimplemented
Model Specific Registers. The only user of that for now is going
to be the bhyve driver.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
The tests/cputestdata/cpu-parse.sh script has been broken since the
cpu_map.xml file was split into several XMLs.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace all uses where virBuffer would need clearing on the cleanup
path.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
virBuffer is almost always stack-allocated, but requires freeing of the
internals on error. Introduce a VIR_AUTOCLEAN function to deal with
this.
Along with the addition add a test which would leak the buffer contents
if it weren't autocleaned.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The new utility macros are useful for variables we put on the stack but
require some cleanup. The most prominent of those is virBuffer which is
used almost exclusively in that way.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The messages reference testBufEscapeN instead of testBufEscapeRegex.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The conversion to VIR_AUTOFREE of 'escapeList' introduced memory leak of
the copied item to be escaped:
==17517== 2 bytes in 1 blocks are definitely lost in loss record 1 of 32
==17517== at 0x483880B: malloc (vg_replace_malloc.c:309)
==17517== by 0x54D666D: strdup (in /usr/lib64/libc-2.28.so)
==17517== by 0x497663E: virStrdup (virstring.c:956)
==17517== by 0x497663E: virStrdup (virstring.c:945)
==17517== by 0x48F8853: virBufferEscapeN (virbuffer.c:707)
==17517== by 0x403C9D: testBufEscapeN (virbuftest.c:383)
==17517== by 0x405FA8: virTestRun (testutils.c:174)
==17517== by 0x403A70: mymain (virbuftest.c:517)
==17517== by 0x406BC9: virTestMain (testutils.c:1097)
==17517== by 0x5470412: (below main) (in /usr/lib64/libc-2.28.so)
[...] (all other have same backtrace as it happens in a loop)
Fix it by reverting all the VIR_AUTO nonsense in this function as there
is exactly one place where it's handled.
This effectively reverts commits:
d0a92a037196fbf6df90d261ed2fb1
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
'virBufferFreeAndReset' does not free the top level structure itself.
Additionally we almost exclusively use stack'd buffers rather than
pointers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
dnsmasq documentation says that the *IPv4* prefix/network
address/broadcast address sent to dhcp clients will be automatically
determined by dnsmasq by looking at the interface it's listening on,
so the original libvirt code did not add a netmask to the dnsmasq
commandline (or later, the dnsmasq conf file).
For *IPv6* however, dnsmasq apparently cannot automatically determine
the prefix (functionally the same as a netmask), and it must be
explicitly provided in the conf file (as a part of the dhcp-range
option). So many years after IPv4 DHCP support had been added, when
IPv6 dhcp support was added the prefix was included at the end of the
dhcp-range setting, but only for IPv6.
A user had reported a bug on a host where one of the interfaces was a
superset of the libvirt network where dhcp is needed (e.g., the host's
ethernet is 10.0.0.20/8, and the libvirt network is 10.10.0.1/24). For
some reason dnsmasq was supplying the netmask for the /8 network to
clients requesting an address on the /24 interface.
This seems like a bug in dnsmasq, but even if/when it gets fixed
there, it looks like there is no harm in just always adding the
netmask to all IPv4 dhcp-range options similar to how prefix is added
to all IPv6 dhcp-range options.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This fixes a bug that has been present since the original version of
the function was pushed in commit 1ab80f3 on Nov. 26 2010 (by me). The
virSocketAddr::len was not being set.
Apparently until now we were always calling
virSocketAddrPrefixToNetmask with virSocketAddr object that was
already (coincidentally) initialized for the proper address family,
but the bug became apparent when trying to use it to fill in an
otherwise uninitialized object.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Most of the code base is fairly consistent about using the name
'uuidstr' when dealing with a formatted human-readable form, and
'uuid' when dealing with the smaller raw bytes form. Fix
snapshot_conf to comply, as well as reducing the scope of a human
string to only the error message that needs it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Signal the udev thread the change of `priv->threadQuit` by using the
thread condition.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If the udev thread is stopped, it must be ensured that the watch
handle is also removed from the main loop.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Currently, some arguments are called strcontent and strsrc, or
content and src or some other combination. This makes it
impossible to see at the first glance what argument is supposed
to represent 'expected' value and which one represents 'actual'
value. Rename the arguments to make it obvious.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The current naming makes it hard for me to see which holds the
expected value and which holds the actual value. Rename them to
make it obvious.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In order to save a few lines of code, and also since it's hype
let's use VIR_AUTOFREE() for the two strings we allocate there.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The iohelper is an internal program that's only supposed to
be called by libvirt, and whatever output it might produce
will ultimately be passed to virReportError() or similar.
Since we do not want strings passed to those functions to
contain newlines, we can simply not output them in the first
place.
This is what happens in pretty much all cases already, but
in a couple instances newlines have managed to slip in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Commit f609cb85 (0.9.5) introduced virDomainSnapshotGetXMLDesc()'s use
of @flags as a subset of virDomainXMLFlags, documenting that 2 of the
3 flags defined at the time would never be valid. Later, commit
28f8dfdc (1.0.0) introduced a new flag, VIR_DOMAIN_XML_MIGRATABLE, but
did not adjust the snapshot documentation to declare it as invalid.
However, since the flag is not accepted as valid by any of the
drivers (remote is just passthrough; esx and vbox don't support flags;
qemu, test, and vz only support VIR_DOMAIN_XML_SECURE), and it is
unlikely that the domain state saved off during a snapshot creation
needs to be migration-friendly (as the snapshot is not the source of
a migration), it is easier to just define an explicit set of supported
flags directly related to the snapshot API rather than trying to
borrow from domain API, and risking confusion if even more domain
flags are added later (in fact, I have an upcoming patch that plans to
add a new flag to virDomainGetXMLDesc that makes no sense for
snapshots).
There is no API or ABI impact (since we purposefully used unsigned int
rather than an enum type in public API, and since the new flag name
carries the same value as the reused name).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Commit d2a929d4 (0.9.4) defined virDomainSaveImageGetXMLDesc()'s use
of @flags as a subset of virDomainXMLFlags, documenting that 2 of the
3 flags defined at the time would never be valid. Later, commit
28f8dfdc (1.0.0) introduced a new flag, VIR_DOMAIN_XML_MIGRATABLE, but
did not adjust the save image documentation to declare it as invalid.
Later, commit a67e3872 (3.7.0) blindly copied and pasted the same text
into virDomainManagedSaveGetXMLDesc.
However, since the flag is not accepted as valid by any of the
drivers (remote is just passthrough; and qemu is the only supporting
driver for either API, with support for just VIR_DOMAIN_XML_SECURE),
it is easier to just define an explicit set of supported flags
directly related to the save image API rather than trying to borrow
from live domain API, and risking confusion if even more domain flags
are added later (in fact, I have an upcoming patch that plans to add
a new flag to virDomainGetXMLDesc that makes no sense for saved
images). We may someday decide that saved images need to support the
_MIGRATABLE flag, as it is possible to load a saved image with a
different version of libvirt than the one that created it, but that
can be a separate patch if it is ever needed. Meanwhile, it DOES make
sense to reuse the same flags for SaveImage and for ManagedSave (since
ManagedSave is really just sugar for creating a normal SaveImage in a
location controlled by libvirt instead of by the user).
There is no API or ABI impact (since we purposefully used unsigned int
rather than an enum type in public API, and since the new flag name
carries the same value as the old reused name).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Although VIR_DOMAIN_DEF_FORMAT_INACTIVE and VIR_DOMAIN_XML_INACTIVE
happen to have the same value (1<<1), they come from different enums;
and it is nicer to reason about a 'flags' variable if all uses of
that variable are compared against the same enum type. Messed up in
commit 06f75ff2 (3.8.0).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Many drivers had a comment that they did not validate the incoming
'flags' to virDomainGetXMLDesc() because they were relying on
virDomainDefFormat() to do it instead. This used to be the case
(at least since 461e0f1a and friends in 0.9.4 added unknown flag
checking in general), but regressed in commit 0ecd6851 (1.2.12),
when all of the drivers were changed to pass 'flags' through the
new helper virDomainDefFormatConvertXMLFlags(). Since this helper
silently ignores unknown flags, we need to implement flag checking
in each driver instead.
Annoyingly, this means that any new flag values added will silently
be ignored when targeting an older libvirt, rather than our usual
practice of loudly diagnosing an unsupported flag. Add comments
in domain_conf.[ch] to remind us to be extra vigilant about the
impact when adding flags (a new flag to add data is safe if the
older server omitting the requested data doesn't break things in
the newer client; a new flag to suppress data rather than enhancing
the existing VIR_DOMAIN_XML_SECURE may form a data leak or even a
security hole).
In the qemu driver, there are multiple callers all funnelling to
qemuDomainDefFormatBufInternal(); many of them already validated
flags (and often only a subset of the full set of possible flags),
but for ease of maintenance, we can also check flags at the common
helper function.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuProcessQMPStart starts a QEMU process and monitor connection that
can be used by multiple functions possibly for multiple QMP commands.
The QMP exchange to exit capabilities negotiation mode and enter command
mode can only be performed once after the monitor connection is
established.
Move responsibility for entering QMP command mode into the
qemuProcessQMP code so multiple functions can issue QMP commands in
arbitrary orders.
This also simplifies the functions using the connection provided by
qemuProcessQMPStart to issue QMP commands.
Test code now needs to call qemuMonitorSetCapabilities to send the
message to switch to command mode because the test code does not use the
qemuProcessQMP command that internally calls qemuMonitorSetCapabilities.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Multiple QEMU processes for QMP commands can operate concurrently.
Use a unique directory under libDir for each QEMU process to avoid
pidfile and unix socket collision between processes.
The pid file name is changed from "capabilities.pidfile" to "qmp.pid"
because we no longer need to avoid a possible clash with a qemu domain
called "capabilities" now that the processes artifacts are stored in
their own unique temporary directories.
"Capabilities" was changed to "qmp" in the pid file name because these
processes are no longer specific to the capabilities usecase and are
more generic in terms of being used for any general purpose QMP message
exchanges with a QEMU process that is not associated with a domain.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Users qemuProcessQMP struct were always forced to call both
qemuProcessQMPStop and qemuProcessQMPFree when they are done with the
process. We can just call qemuProcessQMPStop from qemuProcessQMPFree and
let users call qemuProcessQMPFree only.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuProcessQMPNew is one of the public functions used to create and
manage a QEMU process for QMP command exchanges outside of domain
operations.
Add descriptive comment block, debug statement and make source
consistent with the cleanup / VIR_STEAL_PTR format used elsewhere.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The monitor config data is removed from the qemuProcessQMP struct.
The monitor config data can be initialized immediately before call to
qemuMonitorOpen and does not need to be maintained after the call
because qemuMonitorOpen copies any strings it needs.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move code for setting paths and prepping file system from
qemuProcessQMPNew to qemuProcessQMPInit.
This keeps qemuProcessQMPNew limited to data structures and path
initialization is done in qemuProcessQMPInit.
The patch is a non-functional, cut / paste change, however goto is now
"cleanup" rather than "error".
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Store libDir path in the qemuProcessQMP struct in anticipation of moving
path construction code into qemuProcessQMPInit function.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All code related to QEMU monitor is moved from qemuProcessQMPNew and
qemuProcessQMPInit into qemuProcessQMPConnectMonitor.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a replacement for qemuProcessQMPRun to make the name consistent
with qemuProcessStart. The original qemuProcessQMPRun function is
renamed as qemuProcessQMPLaunch and becomes one of the simpler functions
called from the main qemuProcessQMPStart entry point. The following
patches will move parts of the code in qemuProcessQMPLaunch to the other
functions (qemuProcessQMPInit and qemuProcessQMPConnectMonitor).
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Keep the pointer to QEMU stderr output in qemuProcessQMP struct instead
of requiring the caller to provide it (and free it).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's push the call to virQEMUCapsLogProbeFailure down the stack to
where the probing failure is detected.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While qemuProcessQMPRun and virQEMUCapsInitQMPMonitor* functions called
from virQEMUCapsInit ignore some errors, the caller of virQEMUCapsInit
would report an error unless usedQMP is true anyway. And since usedQMP
can only be true if the probing code really succeeded (i.e., no errors
were ignored), we can just simplify the logic by not ignoring the errors
in the first place.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function contains two almost identical parts. Let's consolidate them
into a single helper function and call it twice.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In new process code, move from model where qemuProcessQMP struct can be
used to activate a series of Qemu processes to model where one
qemuProcessQMP struct is used for one and only one Qemu process.
By allowing only one process activation per qemuProcessQMP struct, the
struct can safely store process outputs like status and stderr, without
being overwritten, until qemuProcessQMPFree is called.
By doing this, process outputs like status and stderr can remain stored
in the qemuProcessQMP struct without being overwritten by subsequent
process activations.
The forceTCG parameter (use / don't use KVM) will be passed when the
qemuProcessQMP struct is initialized since the qemuProcessQMP struct
won't be reused.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virQEMUCapsInitQMP now stops QEMU process in all execution paths,
before freeing the process structure.
The qemuProcessQMPStop function can be called multiple times without
problems... Won't attempt to stop processes and free resources multiple
times.
Follow the convention established in qemu_process of
1) alloc process structure
2) start process
3) use process
4) stop process
5) free process data structure
The process data structure persists after the process activation fails
or the process dies or is killed so stderr strings can be retrieved
until the process data structure is freed.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
s/qemuProcessQMPAbort/qemuProcessQMPStop/ applied to change function
name used to stop QEMU processes in process code moved from
qemu_capabilities.
No functionality change.
The new name, qemuProcessQMPStop, is consistent with the existing
function qemuProcessStop used to stop Domain processes.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add the const qualifier on non modified strings
(string only copied inside qemuProcessQMPNew)
so that const strings can be used directly in calls to
qemuProcessQMPNew in future patches.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU process code in qemu_capabilities.c is moved to qemu_process.c in
order to make the code usable outside the original capabilities use
cases.
The moved code activates and manages QEMU processes without establishing
a guest domain.
This patch is a straight cut/paste move between files.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function must return a pointer, not a boolean. Fortunately 'false'
is equivalent to 'NULL' so this bug no had ill effect previously.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Only one of the three callers of virPCIDeviceAddressFormat correctly
handles an error return status. Fortunately it can't fail so can be
made void.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The memory allocated by VIR_REALLOC_N() is uninitialized,
which means it's not possible to figure out whether any
output was produced at all after the fact.
Since we don't care about the previous contents of buffers,
if any, use VIR_FREE() followed by VIR_ALLOC_N() instead.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Remove unused variable. Fix for [1]
[1] 821dd6d8: storage: Use VIR_AUTOFREE for storage backends
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
We dropped support in commit 8e91a40 (November 2015), but some
occurrences still remained, even in live code.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reported-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that virStorageSource is a subclass of virObject we can use
virObjectUnref and remove virStorageSourceFree which was a thin wrapper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Since virStorageSource is now a subclass of virObject, we can use
VIR_AUTOUNREF instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add helper for utilizing __attribute__(cleanup())) for unref-ing
instances of sublasses of virObject.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
To allow tracking a single virStorageSource in multiple structures
without extra hassle allow refcounting by turining it into an object.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add virStorageSourceNew and refactor places allocating that structure to
use the helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use the proper function to allocate a disk definition.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that we've moved all the actual code into helper
functions, we can turn it into a switch statement.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Minor tweaks to ensure compliance with our coding style.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Minor tweaks to ensure compliance with our coding style.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Minor tweaks to ensure compliance with our coding style.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The libvirt zonefile for firewalld (added in commit 3b71f2e4) does the
following:
1) lists specific services it wants to allow, then
2) uses a lower priority <reject/> rule to block all other services to
the host, and then finally,
3) relies on the zone's default "accept" policy to, accept all
forwarded traffic (since forwarded traffic is ignored by the
slightly higher priority <reject/> rule in (2)).
I had assumed that icmp traffic was either being allowed at the top of
the rules, or that it would be ignored by the <reject/> rule and
passed by the default accept policy (similar to forwarded traffic),
but this assumption was incorrect; the <reject/> rule does block icmp
traffic. This became apparent when DHCPv6 which requires ICMPv6 in
addition to udp/dhcpv6) failed to work.
This all means that in order to achieve our original goal of "similar
behavior to a default reject policy, but also allowing forwarded
traffic", we need to add rules to allow all icmp and icmpv6 traffic to
the libvirt zone, and that's what this patch does.
This is a further refinement of the resolution to
https://bugzilla.redhat.com/1650320
Signed-off-by: Laine Stump <laine@laine.org>
Acked-by: Eric Garver <eric@garver.life>
On some very basic installations (e.g. some container images) the
modprobe binary might be missing. If that is the case, don't fail
virkmodtest.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
My change in 112f3a8d0f was too drastic. The @charAlias
variable is initialized only if @monitor == true. However, it is
used even outside of that condition, at which point it's just
uninitialized pointer.
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Even if an error is reported by `udev_enumerate_scan_devices`,
e.g. because a driver of a device has an bug, we can still enumerate
all other devices. Additionally the documentation of
udev_enumerate_scan_devices says that on success an integer >= 0 is
returned (see man udev_enumerate_scan_devices(3)).
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Another misleadingly named macro.
Deprecate in favor of NULLSTR_STAR.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This macro neither takes nor produces an empty string.
Remove it in favor of NULLSTR_MINUS.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Use the newly introduced macro in the few places that open-code it.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
NULLSTR_EMPTY, the quiet child,
NULLSTR_STAR, the famous one and
NULLSTR_MINUS, the grumpy one.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The @tmpChr is looked up in domain definition based on user
provided chardev XML. Therefore, the alias must have been
allocated already when domain was started up.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This is basically an old artefact from 24b0821926 when the idea
was:
1) Build device string only to see if chardev has any -device
associated with it and thus if device_del is needed
2) Detach chardev using chardev_del
Now, that DEVICE and DEVICE_DELETED capabilities are assumed for
every domain 1) does not make sense anymore.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Previous two commits demonstrate a hole in our test scenario.
Fix that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624204
The guestfwd channels are -netdevs really. Hotunplug them as
such. Also, DEVICE_DELETED event is not triggered (surprisingly,
since we're not issuing device_del rather than netdev_del) and
associated chardev is removed automagically too. This means that
we need to do qemuDomainRemoveChrDevice() minus monitor call to
remove the chardev.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
So far we are passing @chr to qemuBuildChrDeviceStr. This is
suboptimal (in fact wrong) because @chr is just parsed XML
definition provided by user which by definition may lack some
information. On the other hand, @tmpChr is the one that was found
using @chr in domain definition so it contains the same amount of
information or more.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The code for creating external snapshots for an offline domain
called out to qemu-img without escaping commas in the manner
that qemu-img expects. This also fixes a typo in the comment.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
commit 3bba4825 added the new function virFirewallDInterfaceSetZone()
which calledsends virDBUSCallMethod a DBusMessage** for the reply
message, but doesn't use the reply, and also doesn't free it. Since
this arg is allowed to be NULL, this patch simply sets it to NULL so
we don't have to deal with it.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Although it is not needed at the moment, do not rely on a value being
set before the first jump to cleanup.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Use a temporary 'rc' variable to avoid comparing signed
and unsigned integers in the cleanup section.
Bug introduced by commit 3072ded which added the comparison against
the unsigned 'i'.
Also make niothreads size_t to mark that it should be unsigned.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Instead of using niothreads which defaults to zero, use the common
pattern with a ret varaible set to true just before the cleanup label.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If we find multiple "id=" strings during processing, then we need
to force an error since we cannot have multiple <auth>'s defined
for a single source volume.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If virDomainHostdevSubsysSCSIiSCSIDefParseXML processing finds a
duplicated <auth> structure, we should error out rather than continue.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Only one path will consume the @def; otherwise, we need to free it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify code to use the VIR_AUTOCLOSE logic cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than overload @ret with trying serve multiple purposes,
let's initialize @ret to -1 and introduce an @rc function return
value that can be used for functions that may return -1 or -2
and only override @ret when rc < 0.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities. This also allows
for the cleanup of some goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than having two exit paths, let's use a @retval value
and VIR_STEAL_PTR in order to unite the exit path through the
error label.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than have a need for old_dom_name, let's just VIR_FREE
the old name first, then use VIR_STEAL_PTR to handle the swap
from the old name to the new name.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than open coding virStorageFileGetRelativeBackingPath
and virStorageFileGetMetadataRecurse, let's make use of the
VIR_STEAL_PTR macro.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove the need for the @name variable by directly assigning
into source->hosts[i].name.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
On error from virAsprintf we would erroneously return 0 with
the @*type not being set. Change to a return -1 on error like
we should have been doing.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit a523770c3 added @retval return processing for
virStorageBackendUpdateVolInfo in order to allow a -2
to be return; however, upon successful completion
@retval = 0 and if either the virStorageBackendSCSISerial
or the virStoragePoolObjAddVol failed, the method would
return 0, but not add the @vol to the pool. So let's
just reset retval = -1 and continue processing.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than initialize to 0 and change to -1 on error, let's do the
normal operation of initializing to -1 and set to 0 on success.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's initialize @path to NULL, then rather than use two labels
free_path and out labels, let's use the cleanup: label to call
VIR_FREE(path); and VIR_FORCE_CLOSE(fd);
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than have two error paths, let's use a @retval value and
VIR_STEAL_PTR on @vgname and @pvname to unity the exit path through
the error label.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the virAsprintf of the vol->key fails, then we would erroneously
return the '0' from the @ret from virStorageBackendSheepdogParseVdiList.
So in this error path case, let's set ret = -1.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rework the logic to remove the need for the @ok_to_mklabel boolean.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than having an error path, let's rework the code to allocate
and fill into an @def variable and then steal that into @ret when we
are successful leaving just a cleanup: path.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than having an error path, let's rework the code to allocate
and fill into an @def variable and then steal that into @ret when we
are successful leaving just a cleanup: path.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than having an error path, let's rework the code to allocate
and fill into an @authdef variable and then steal that into @ret when
we are successful leaving just a cleanup: path.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since commit a7424faff QMP is always used.
Also, commit 932534e8 removed the last use of this apart from:
* parsing/formatting this in the caps cache
* using it as a temporary variable to know when to report an error
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Ever since the introduction of the guest-get-fsinfo command
in QEMU commit 46d4c572 qga/qapi-schema.json says that
the 'disks' array can possibly be empty. For example when getting
the target list is unsupported:
https://bugzilla.redhat.com/show_bug.cgi?id=1567041
Pass an empty string instead of NULL to vshTableRowAppend to prevent
a mismatched column number.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Use vshPrintExtra to report this message. It is a human-readable
explanation rather than an error.
Also, it is a very special system that runs with no filesystems.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Failing to print the table is also a reason to return failure
and print the reported error.
Switch to the usual pattern where we fall through the cleanup
label right after setting ret to true instead of infering the
return value from the number of filesystems returned.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Do not use 'ret' throughout the whole function to avoid confusion
and comparison of unsigned 'i' against signed 'ret'.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Trivially implement this by deleting the bogus check in
vshTableSafeEncode.
Now it returns an empty string for an empty string instead
of returning NULL without setting an error.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The wireshark-2.4.0 is almost 2 years old now. Assuming anybody
interested in running latest libvirt doesn't run old wireshark,
it is safe to do this. It also simplifies the code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since wirshark-2.5.0 toplevel plugins are no longer loaded. Only
plugins from epan/, wiretap/ or codecs/ subdirs are. Update the
plugin dir we generate. This is safe to do even for older
wiresharks, since they load plugins from there too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As advertised in previous commits, wireshark has changed the way
that plugins register. In fact, it has done so two times since
the last time we've touched our code (wireshark v2.5.0 and
v2.9.0). Use the wireshark script from respective releases to
generate newer registration callbacks and put them into our code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In order to be able to dissect libvirt protocol the wireshark
plugin needs to be registered. So far this plugin registration
code was generated on every build using a script that was copied
over from wireshark's tools/ directory.
This is suboptimal, because the way that plugins register changes
across wireshark releases. Therefore, let's keep the generated
file in the git, put the command line used to generate the file
into a comment and remove the script.
This solution allows us to put different registration mechanism
into one file (under #ifdef-s) and thus compile with wider range
of wireshark releases.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the majority of the packet-libvirt.h content into
packet-libvirt.c and expose only register functions which are the
only ones that are not static.
The rationale behind is that packet-libvirt.h will be included
from packet.c and therefore the header file needs to be as clean
as possible.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Mock out libxlCapsHasPVUSB to always return true, so test results
aren't dependent on host libxl version
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
No functional change, but this will allow us to mock out the function
in the test suite
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to mock functions in the libxl driver, like
is already possible for the qemu driver
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Every other mock library is named ending in mock.c, move
virmocklibxl.c to follow that pattern
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Commit fafcc818f changed the docs to say that when creating a
pool directory or file volume with no owner/group specified, they
will be inherited from the parent directory. This isn't correct
now and doesn't seem to have ever been correct
In reality default owner/group is whatever UID/GID libvirtd is
running as
Signed-off-by: Cole Robinson <crobinso@redhat.com>
If 2 threads call abort for example then one of them
will hang because client will send 2 abort messages and
server will reply only on first of them, the second will be
ignored. And on server reply client changes the state only
one of abort message to complete, the second will hang forever.
There are other similar issues.
We should complete all messages waiting reply if we got
error or expected abort/finish reply from server. Also if one
thread send finish and another abort one of them will win
the race and server will either abort or finish stream. If
stream is aborted then thread requested finishing should report
error. In order to archive this let's keep stream closing reason
in @closed field. If we receive VIR_NET_OK message for stream
then stream is finished if oldest (closest to queue end) message
in stream queue is finish message and stream is aborted if oldest
message is abort message. Otherwise it is protocol error.
By the way we need to fix case of receiving VIR_NET_CONTINUE
message. Now we take oldest message in queue and check if
this is dummy message. If one thread first sends abort and
second thread then receives data then oldest message is abort
message and second thread won't be notified when data arrives.
Let's find oldest dummy message instead.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If we call virStreamFinish and virStreamAbort from 2 distinct
threads for example we can have access to freed memory.
Because when virStreamFinish finishes for example virStreamAbort
yet to be finished and it access virNetClientStreamPtr object
in stream->privateData.
Also it does not make sense to clear @driver field. After
stream is finished/aborted it is better to have appropriate
error message instead of "unsupported error".
This commit reverts [1] or virNetClientStreamPtr and
virStreamPtr will never be unrefed due to cyclic dependency.
Before this patch we don't have leaks because all execution
paths we call virStreamFinish or virStreamAbort.
[1] 8b6ffe40 : virNetClientStreamNew: Track origin stream
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
This mixing errors and EOF condition in one flag is odd.
Instead let's check st->err.code where appropriate.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Checking virNetClientStreamRaiseError without client lock
is racy which is fixed in [1] for example. Thus let's remove such checks
when we are sending message to server. And in other cases
(like virNetClientStreamRecvHole for example) let's move the check
into client stream code.
virNetClientStreamRecvPacket already have stream lock so we could
introduce another error checking function like virNetClientStreamRaiseErrorLocked
but as error is set when both client and stream lock are hold we
can remove locking from virNetClientStreamRaiseError because all
callers hold either client or stream lock.
Also let's split virNetClientStreamRaiseErrorLocked into checking
state function and checking message send status function. They are
same yet.
[1] 1b6a29c21: rpc: fix race on stream abort/finish and server side abort
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Stream server error is not propagated if thread does not have the buck.
In case we have the buck we are ok due to the code added in [1].
Let's check for stream error on all paths. Now we don't need
to raise error in virNetClientCallDispatchStream.
Old code reported error only if the first message in wait
queue awaits reply. It is odd as depends on wait queue
situation. For example if we have only TX
message in queue and in one iteration loop both send the
message and receive error then thread sending TX message did
not receive the error. Next if we have RX message (first)
and TX message (second) in queue and in one iteration
loop both send the TX message and receive error then
thread sending TX message received error. In short
it was inconsistent. Let's report error whenever
we received it and for every type of message as it makes
sense to report errors as early as possible.
[1] 16c6e2b41: Fix propagation of RPC errors from streams
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
In next patches we'll add stream state checks to this
function that applicable to all call paths. This is handy
place because we hold client lock here.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Stream abort/finish can hang because we can receive abort message
from server and yet sent abort/finish message to server. The latter
will not be answered ever because after server sends abort message
it forgets the stream and messages for unknown stream are simply ignored.
We check for stream error at the very beginning of remoteStreamFinish/remoteStreamAbort
but stream error can be set after the check in another thread operating
on stream. Let's check for stream error under client lock similar
to what's done in [1].
[1] 833b901cb: stream: Check for stream EOF
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
These functions do mostly the same things, and it would be
preferrable if they did them in mostly the same ways. This
also fixes a few violations to our code style guidelines.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The function operates on a virDomainDef and is not tied to
device address assignment in any way, so it makes more sense
for it to live along with qemuDomainIs*() and the like.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Ideally we'd make all of them static, but there are a few
cases where we don't have a virDomainDef instance handy and
so they are the only option.
For the few ones we're forced to keep exporting, document
through comments that the alternative is preferred.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Now that we have added architecture checks to all
qemuDomainIs*() functions, we no longer need to perform the
same checks separately.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
There is very little overlap in the machine types available
on different architectures, so broadly speaking checking the
machine type is usually enough; regardless, it's better to
check the architecture as well.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
We want the signatures to be consistent, and also we're
going to start using the additional parameter next.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Make sure related functions, eg. all qemuDomainIs*(), are
close together instead of being sprinkled throughout both
the header and implementation file, and also that all
qemuDomainMachine*() functions are declared first since
we're going to make a bunch of them static later on.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
While the chances of the current checks resulting in false
positives are basically zero, it's still nicer to check for
the full prefix instead of the prefix's prefix.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
For consistency, let's use the semicolon for all definitions.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Luckily, the new URL still points to the same location, the only change
is in the document name where an escaped space (%20) was replaced by an
underscore.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
QEMU plans to deprecate 'query-events' as it's non-extensible. Events
are also described by 'query-qmp-schema' so we can use that one instead.
This patch adds detection of events to
virQEMUCapsProbeQMPSchemaCapabilities using the same structure declaring
them for the old approach (virQEMUCapsEvents). This is possible as the
name is the same in the QMP schema and our detector supports that
trivially.
For any complex queries virQEMUCapsQMPSchemaQueries can be used in the
future.
For now we still call 'query-events' and discard the result so that it's
obvious that the tests pass. This will be cleaned up later.
https://bugzilla.redhat.com/show_bug.cgi?id=1673320
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
DO_TEST_ATTACH and DO_TEST_ATTACH_EVENT now do the same thing so we can
remove the latter including the infrastructure.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Currently all supported qemu versions now have support for the
DEVICE_DELETED event. This means that testing the old approach is a
waste of time.
Always add the QEMU_CAPS_DEVICE_DEL_EVENT capability in the hotplug test
and fix existing test cases.
The 'disk-virtio', 'disk-usb', 'disk-scsi', and 'disk-scsi-2' already
had variants that used the event, so the non-event variants will be
removed.
For all other cases the QMP_DEVICE_DELETED macro is used to add the
correct reply.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
This variant is unused as we create the object including capabilities
with DO_TEST_ATTACH_EVENT, which is then reused.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
QEMU accidentally exposed the id of -drive (or same value as disk
serial, if provided) in one of the identifiers visible from the guest.
To avoid regression in case when -blockdev will be used we need to
always specify it ourselves.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The property allows to control the guest-visible content of the vendor
specific designator of the 'Device Identification' page of a SCSI
device's VPD (vital product data).
QEMU was leaking the id string of -drive as the value if the 'serial' of
the disk was not specified. Switching to -blockdev would impose an ABI
change.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Based on qemu commit 'v3.1.0-1445-ga61faa3d02'. Will allow checking
for the scsi 'device_id' property.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Upcoming addition of a new field will need to make sure that SCSI disk
serial is tested as well. Add a case to one of the existing tests.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
For SCSI, IDE, and AHCI cdroms the appropriate device types which select
the correct media are used. In qemu there's one other code path that
looks at -drive media=cdrom in the XEN pv code. Thankfully we don't
support it with qemu (see qemuBuildDiskDeviceStr). All other devices
ignore it as the comment states, thus we can drop that code.
The test fallout is expectedly only in the test added for uncommon cdrom
types.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Add full and empty cdroms on 'usb' and 'sd' bus to have test
coverage. Note that this does not guarantee that qemu will accept them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Attempting to create an empty virtio-blk drive results into:
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0xc,drive=drive-virtio-disk1,id=virtio-disk1: Device needs media, but drive is empty
Attempting to eject media from virtio-blk based drive results into:
error: internal error: unable to execute QEMU command 'eject': Device 'drive-virtio-disk0' is not removable
Forbid configurations where users would attempt to use cdroms in virtio
bus.
Fix few wrong examples which are not really relevant to the tested code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Cast disk->bus to proper type and add missing values to the enum so it's
more obvious what types are supported.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The split of ide-disk into the two separate devices was introduced by
qemu commit 1f56e32a7f4b3 released in qemu v0.15.
Note that when compared to the previous commit which made sure that no
disk related tests were touched, in this case it's not as careful.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The split of scsi-disk into the two separate devices was introduced by
qemu commit b443ae67 released in qemu v0.15.
All changes to test files are not really related to disk testing thanks
to previous refactors.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The tests are for the same feature. Move all the cases to 'disk-shared'
case as it's already using DO_TEST_CAPS_LATEST
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
A lot of code with no real impact and popularity. Remove all the helpers
now that the only test case is gone.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Testing that the cachemode is properly recorded to the configuration
after startup does not add much value and overcomplicates the xml2argv
test.
Remove the 'disk-shared' test with old capabilities as the test with
real capabilities covers the code sufficiently.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Using an old strict set of capabilities is not of much use if a code
path would select a more modern controller by accident.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Now that we have a specific test for testing the 'virtio-scsi'
controller and other tests which test a combination of scsi and non-scsi
devices this test no longer makes sense.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Since commit a4cda054e7 we are using 'ide-hd' and 'ide-cd' instead of
'ide-drive'. We also should probe capabilities for 'ide-hd' instead of
'ide-drive'. It is safe to do as 'ide-drive' is the common denominator
of both 'ide-hd' and 'ide-cd' so all the properties were common.
For now the test data are modified by just changing the appropriate type
when probing for caps.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Since commit 02e8d0cfdf we are using 'scsi-hd' and 'scsi-cd' instead of
'scsi-disk'. We also should probe capabilities for 'scsi-hd' instead of
'scsi-disk'. It is safe to do as 'scsi-disk' is the common denominator
of both 'scsi-hd' and 'scsi-cd' so all the properties were common.
For now the test data are modified by just changing the appropriate type
when probing for caps.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
To avoid changes to the filled in microcode in case we change the caps
replies file for any reason make the number depend on the filename.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
This flag tells virDomainMigrateSetMaxSpeed and
virDomainMigrateGetMaxSpeed APIs to work on post-copy migration
bandwidth.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This typed parameter for virDomainMigrate3 and virDomainMigrateToURI3
APIs may be used for setting maximum post-copy migration bandwidth.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This patch adds a new VIR_MIGRATE_PARAM_BANDWIDTH_POSTCOPY typed
parameter for virDomainMigrate3 and virDomainMigrateToURI3 for setting
maximum post-copy migration bandwidth.
In case the initial VIR_MIGRATE_PARAM_BANDWIDTH_POSTCOPY value turns out
to be suboptimal a new VIR_DOMAIN_MIGRATE_MAX_SPEED_POSTCOPY flag for
virDomainMigrateSetMaxSpeed and virDomainMigrateGetMaxSpeed may be used
to set/get the maximum post-copy migration bandwidth while migration is
already running.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
So far migration parameters were changed only at the beginning of
migration mostly via an automatic translation from flags and typed
parameters. We need to export a few more functions to support APIs which
may set migration parameters while migration is already running.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make the code flow easier to follow and get rid of the ugly endjob
label inside if branch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some migration parameters supported by libvirt may use units that differ
from the units used by QEMU for the corresponding parameters. For
example, libvirt defines migration bandwidth in MiB/s while QEMU expects
B/s. Let's add a unit field to qemuMigrationParamsTPMapItem for
automatic conversion when translating between libvirt's migration typed
parameters and QEMU's migration paramteres.
This patch is a preparation for future parameters as the existing
VIR_MIGRATE_PARAM_BANDWIDTH parameter is set using "migrate_set_speed"
QMP command rather than "migrate-set-parameters" for backward
compatibility.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuDomainBlockPivot and qemuDomainBlockJobAbort need the job name for
cancelling or pivoting but were generating it locally instead of
accessing the existing copy in the job data structure.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The writing to an image actually starts when the copy job is initiated,
so checking this at the time of the pivot operation is too late.
Move the check to qemuDomainBlockCopyCommon. Note that modern qemu would
have prevented two writers with qcow2 so the slim possibility of a job
started with libvirtd without this patch missing the check is not really
worth worrying about.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For copy and active commit jobs we record the state of the mirror so
that we can recover. The status XML was not saved in case of
qemuDomainBlockPivot due to an oversight.
Save the XML always when invoking qemuDomainBlockJobAbort even if
the job is not currently tracking any state. This will change later and
also this is not a particularly hot code path.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the container is really a simple one (init is just bash and
the whole root is passed through) then virDomainReboot and
virDomainShutdown will talk to the actual init within the host.
Therefore, 'virsh shutdown $dom' will result in shutting down the
host. True, at that point the container is shut down too but
looks a bit harsh to me.
The solution is to check if the init inside the container is or
is not the same as the init running on the host.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
So far the virInitctlSetRunLevel() is fully automatic. It finds
the correct fifo to use to talk to the init and it will set the
desired runlevel. Well, callers (so far there is just one) will
need to inspect the fifo a bit just before the runlevel is set.
Therefore, expose the internal list of fifos and also allow
caller to explicitly use one.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Due to a bug the seclabels are restored before any PID in the
container is killed. This should be done afterwards in
virLXCProcessCleanup.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Prior to rewrite of cgroup code we only had one backend to try.
After the rewrite the virCgroupBackendGetAll() returns both
backends (for v1 and v2). However, not both have to really be
present on the system which results in killRecursive callback
failing which in turn might mean we won't try the other backend.
At the same time, this function reports no error as it should.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Not that it would matter because LXC driver doesn't differentiate
the job types so far, but nevertheless the Destroy() should grab
LXC_JOB_DESTROY.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The number of iothreads is not part of the vm state sent during
migration, nor exposed to the guest ABI, so this restriction is
a mistake in libvirt. Let's remove that bit of code.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jie Wang <wangjie88@huawei.com>
Device attribute does not have dotted "portAddr" format. Instead it
has single number format described but "usbAddr" which corresponds
to device parsing code in virDomainHostdevSubsysUSBDefParseXML.
Looks like [1] mistakenly changed device format for hostdev devices.
And [2] copy-n-paste this for hostdev network interfaces.
[1] 31710a53 Modify USB port to be defined as a port path
[2] 3b1c191f conf: parse/format type='hostdev' network interfaces
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The checks and error messages are mostly the same across
all virtio-input devices, so we can avoid having multiple
copies of the same code.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Turns out different versions of QEMU on the same architecture
produce the same output, so we can have a single output file
per architecture instead of duplicating the same data over and
over again.
Spotted-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
It will not work. This breaks qemu capabilities probing as a user.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
For normal starts (no incoming migration) the refresh of the QEMU
state must be done before the VCPUs getting started since otherwise
there might be a race condition between a possible shutdown of the
guest OS and the QEMU monitor queries.
This fixes "qemu: migration: Refresh device information after
transferring state" (93db7eea1b).
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
If a domain has a disk that is type='network' we require specific
cache mode to allow migration with it (either 'directsync' or
'none'). This doesn't make much sense since network disks are
supposed to be safe to migrate by default.
At the same time, we should be checking for the actual source
type, not apparent type set in the domain XML.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Storage pools might want to specify format of the image when translating
the volume thus we can't add any default format when parsing the XML.
Add a explicit format when starting the VM and format is not present
neither by user specifying it nor by the storage pool translation
function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Post parse callback adds the 'raw' type only for local files. Remote
files can also have backing store (even local) so we should do this also
for network backed storage.
Note that virStorageFileGetMetadata always considers files with no type
as raw so we will not accidentally traverse the backing chain and allow
unexpected files being labelled with svirt labels.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify some existing tests of network-based disks to omit the storage
format specification.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In commit f80eae8c2a I was too agresive in removing properties of
-drive for empty drives. It turns out that qemu actually persists the
state of 'readonly' and the throttling information even for the empty
drive.
Removing 'readonly' thus made qemu open any subsequent images added via
the 'change' command as RW which was forbidden by selinux thanks to the
restrictive sVirt label for readonly media.
Fix this by formating the property again and bump the tests and leave a
note detailing why the rest of the properties needs to be skipped.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>). VIR_ONCE_GLOBAL_INIT is almost
exclusively called without an ending semicolon, but let's
standardize on using one like the other macros.
Add a dummy struct definition at the end of the macro, so
the compiler will require callers to add a semicolon.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>), and we have a mix of semicolon and
non-semicolon usage through the code. Let's standardize on using
a semicolon for VIR_LOG_INIT calls.
Drop the semicolon from the final statement of the macro, so
the compiler will require callers to add a semicolon.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>), and we have a mix of semicolon and
non-semicolon usage through the code. Let's standardize on using
a semicolon for VIR_ENUM_IMPL calls.
Move the verify() statement to the end of the macro and drop
the semicolon, so the compiler will require callers to add a
semicolon.
While we are touching these call sites, standardize on putting
the closing parenth on its own line, as discussed here:
https://www.redhat.com/archives/libvir-list/2019-January/msg00750.html
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>), and we have a mix of semicolon and
non-semicolon usage through the code. Let's standardize on using
a semicolon for VIR_ENUM_DECL calls.
Drop the semicolon from the final statement of the macro, so
the compiler will require callers to add a semicolon.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Just before pushing the series containing commit 3bba4825 I had added
a "return true" to the top of virFirewallDZoneExists() to measure the
impact of calling that function once per network during startup. I
found that the effect was minimal, but forgot to remove the "return
true" before pushing. This unfortunately causes a failure to start
networks on systems that have a firewalld version that doesn't support
our libvirt zone file (i.e. pretty much everyone).
This patch removes the unintended line.
Signed-off-by: Laine Stump <laine@laine.org>
Document that using bhyve:commandline is not fully
supported and may cause issues.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When using custom command line arguments, warn that
this configuration is not fully supported.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
- Remove ATTRIBUTE_UNUSED for the "buf" argument, it's
not unused
- Indent fix
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Since we're setting the zone anyway, it will be useful to allow
setting a different (custom) zone for each network. This will be done
by adding a "zone" attribute to the "bridge" element, e.g.:
...
<bridge name='virbr0' zone='myzone'/>
...
If a zone is specified in the config and it can't be honored, this
will be an error.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This patch restores broken guest network connectivity after a host
firewalld is switched to using an nftables backend. It does this by
adding libvirt networks' bridge interfaces to the new "libvirt" zone
in firewalld.
After this patch, the bridge interface of any network created by
libvirt (when firewalld is active) will be added to the firewalld
zone called "libvirt" if it exists (regardless of the firewalld
backend setting). This behavior does *not* depend on whether or not
libvirt has installed the libvirt zone file (set with
"--with[out]-firewalld-zone" during the configure phase of the package
build).
If the libvirt zone doesn't exist (either because the package was
configured to not install it, or possibly it was installed, but
firewalld doesn't support rule priorities, resulting in a parse
error), the bridge will remain in firewalld's default zone, which
could be innocuous (in the case that the firewalld backend is
iptables, guest networking will still function properly with the
bridge in the default zone), or it could be disastrous (if the
firewalld backend is nftables, we can be assured that guest networking
will fail). In order to be unobtrusive in the former case, and
informative in the latter, when the libvirt zone doesn't exist we
then check the firewalld version to see if it's new enough to support
the nftables backend, and then if the backend is actually set to
nftables, before logging an error (and failing the net-start
operation, since the network couldn't possibly work anyway).
When the libvirt zone is used, network behavior is *slightly*
different from behavior of previous libvirt. In the past, libvirt
network behavior would be affected by the configuration of firewalld's
default zone (usually "public"), but now it is affected only by the
"libvirt" zone), and thus almost surely warrants a release note for
any distro upgrading to libvirt 5.1 or above. Although it's
unfortunate that we have to deal with a mandatory behavior change, the
architecture of multiple hooks makes it impossible to *not* change
behavior in some way, and the new behavior is arguably better (since
it will now be possible to manage access to the host from virtual
machines vs from public interfaces separately).
Creates-and-Resolves: https://bugzilla.redhat.com/1650320
Resolves: https://bugzilla.redhat.com/1638342
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In the past (when both libvirt and firewalld used iptables), if either
libvirt's rules *OR* firewalld's rules accepted a packet, it would
be accepted. This was because libvirt and firewalld rules were
processed during the same kernel hook, and a single ACCEPT result
would terminate the rule traversal and cause the packet to be
accepted.
But now firewalld can use nftables for its backend, while libvirt's
firewall rules are still using iptables; iptables rules are still
processed, but at a different time during packet processing
(i.e. during a different hook) than the firewalld nftables rules. The
result is that a packet must be accepted by *BOTH* the libvirt
iptables rules *AND* the firewalld nftable rules in order to be
accepted.
This causes pain because
1) libvirt always adds rules to permit DNS and DHCP (and sometimes
TFTP) from guests to the host network's bridge interface. But
libvirt's bridges are in firewalld's "default" zone (which is usually
the zone called "public"). The public zone allows ssh, but doesn't
allow DNS, DHCP, or TFTP. So even though libvirt's rules allow the
DHCP and DNS traffic, the firewalld rules (now processed during a
different hook) dont, thus guests connected to libvirt's bridges can't
acquire an IP address from DHCP, nor can they make DNS queries to the
DNS server libvirt has setup on the host. (This could be solved by
modifying the default firewalld zone to allow DNS and DHCP, but that
would open *all* interfaces in the default zone to those services,
which is most likely not what the host's admin wants.)
2) Even though libvirt adds iptables rules to allow forwarded traffic
to pass the iptables hook, firewalld's higher level "rich rules" don't
yet have the ability to configure the acceptance of forwarded traffic
(traffic that is going somewhere beyond the host), so any traffic that
needs to be forwarded from guests to the network beyond the host is
rejected during the nftables hook by the default zone's "default
reject" policy (which rejects all traffic in the zone not specifically
allowed by the rules in the zone, whether that traffic is destined to
be forwarded or locally received by the host).
libvirt can't send "direct" nftables rules (firewalld only supports
direct/passthrough rules for iptables), so we can't solve this problem
by just sending explicit nftables rules instead of explicit iptables
rules (which, if it could be done, would place libvirt's rules in the
same hook as firewalld's native rules, and thus eliminate the need for
packets to be accepted by both libvirt's and firewalld's own rules).
However, we can take advantage of a quirk in firewalld zones that have
a default policy of "accept" (meaning any packet that doesn't match a
specific rule in the zone will be *accepted*) - this default accept will
also accept forwarded traffic (not just traffic destined for the host).
Of course we don't want to modify firewalld's default zone in that
way, because that would affect the filtering of traffic coming into
the host from other interfaces using that zone. Instead, we will
create a new zone called "libvirt". The libvirt zone will have a
default policy of accept so that forwarded traffic can pass and list
specific services that will be allowed into the host from guests (DNS,
DHCP, SSH, and TFTP).
But the same default accept policy that fixes forwarded traffic also
causes *all* traffic from guest to host to be accepted. To close this
new hole, the libvirt zone can take advantage of a new feature in
firewalld (currently slated for firewalld-0.7.0) - priorities for rich
rules - to add a low priority rule that rejects all local traffic (but
leaves alone all forwarded traffic).
So, our new zone will start with a list of services that are allowed
(dhcp, dns, tftp, and ssh to start, but configurable via any firewalld
management application, or direct editing of the zone file in
/etc/firewalld/zones/libvirt.xml), followed by a low priority
<reject/> rule (to reject all other traffic from guest to host), and
finally with a default policy of accept (to allow forwarded traffic).
This patch only creates the zonefile for the new zone, and implements
a configure.ac option to selectively enable/disable installation of
the new zone. A separate patch contains the necessary code to actually
place bridge interfaces in the libvirt zone.
Why do we need a configure option to disable installation of the new
libvirt zone? It uses a new firewalld attribute that sets the priority
of a rich rule; this feature first appears in firewalld-0.7.0 (unless
it has been backported to am earlier firewalld by a downstream
maintainer). If the file were installed on a system with firewalld
that didn't support rule priorities, firewalld would log an error
every time it restarted, causing confusion and lots of extra bug
reports.
So we add two new configure.ac switches to avoid polluting the system
logs with this error on systems that don't support rule priorities -
"--with-firewalld-zone" and "--without-firewalld-zone". A package
builder can use these to include/exclude the libvirt zone file in the
installation. If firewalld is enabled (--with-firewalld), the default
is --with-firewalld-zone, but it can be disabled during configure
(using --without-firewalld-zone). Targets that are using a firewalld
version too old to support the rule priority setting in the libvirt
zone file can simply add --without-firewalld-zone to their configure
commandline.
These switches only affect whether or not the libvirt zone file is
*installed* in /usr/lib/firewalld/zones, but have no effect on whether
or not libvirt looks for a zone called libvirt and tries to use it.
NB: firewalld zones can only be added to the permanent config of
firewalld, and won't be loaded/enabled until firewalld is restarted,
so at package install/upgrade time we have to restart firewalld. For
rpm-based distros, this is done in the libvirt.spec file by calling
the %firewalld_restart rpm macro, which is a part of the
firewalld-filesystem package. (For distros that don't use rpm
packages, the command "firewalld-cmd --reload" will have the same
effect).
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
virFirewallDGetBackend() reports whether firewalld is currently using
an iptables or an nftables backend.
virFirewallDGetVersion() learns the version of the firewalld running
on this system and returns it as 1000000*major + 1000*minor + micro.
virFirewallDGetZones() gets a list of all currently active firewalld
zones.
virFirewallDInterfaceSetZone() sets the firewalld zone of the given
interface.
virFirewallDZoneExists() can be used to learn whether or not a
particular zone is present and active in firewalld.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In preparation for adding several other firewalld-specific functions,
separate the code that's unique to firewalld from the more-generic
"firewall" file.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Support for firewalld is a feature that can be selectively enabled or
disabled (using --with-firewalld/--without-firewalld), not merely
something that must be accounted for in the code if it is present with
no exceptions. It is more consistent with other usage in libvirt to
use WITH_FIREWALLD rather than HAVE_FIREWALLD.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1657468
Commit be1bb6c95 changed the way volumes were stored from a forward
linked list to a hash table. In doing so, it required that each vol
object would have 3 unique values as keys into tables - key, name,
and path. Due to how vHBA/NPIV LUNs are created/used this resulted
in a failure to utilize all the LUN's found during processing.
During virStorageBackendSCSINewLun processing fetch the key (or
serial value) for NPIV LUN's using virStorageFileGetNPIVKey which
will formulate a more unique key based on the serial value and
the port for the LUN.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The vHBA/NPIV LUNs created via the udev processing of the
VPORT_CREATE command end up using the same serial value
as seen/generated by the /lib/udev/scsi_id as returned
during virStorageFileGetSCSIKey. Therefore, in order to
generate a unique enough key to be used when adding the
LUN as a volume during virStoragePoolObjAddVol a more
unique key needs to be generated for an NPIV volume.
The problem is illustrated by the following example, where
scsi_host5 is a vHBA used with the following LUNs:
$ lsscsi -tg
...
[5:0:4:0] disk fc:0x5006016844602198,0x101f00 /dev/sdh /dev/sg23
[5:0:5:0] disk fc:0x5006016044602198,0x102000 /dev/sdi /dev/sg24
...
Calling virStorageFileGetSCSIKey would return:
/lib/udev/scsi_id --device /dev/sdh --whitelisted --replace-whitespace /dev/sdh
350060160c460219850060160c4602198
/lib/udev/scsi_id --device /dev/sdh --whitelisted --replace-whitespace /dev/sdi
350060160c460219850060160c4602198
Note that althrough /dev/sdh and /dev/sdi are separate LUNs, they
end up with the same serial number used for the vol->key value.
When virStoragePoolFCRefreshThread calls virStoragePoolObjAddVol
the second LUN fails to be added with the following message
getting logged:
virHashAddOrUpdateEntry:341 : internal error: Duplicate key
To resolve this, virStorageFileGetNPIVKey will use a similar call
sequence as virStorageFileGetSCSIKey, except that it will add the
"--export" option to the call. This results in more detailed output
which needs to be parsed in order to formulate a unique enough key
to be used. In order to be unique enough, the returned value will
concatenate the target port as returned in the "ID_TARGET_PORT"
field from the command to the "ID_SERIAL" value.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Alter the code to use the virStorageFileGetSCSIKey helper
to fetch the unique key for the SCSI disk. Alter the logic
to follow the former code which would return a duplicate
of @dev when either the virCommandRun succeeded, but returned
an empty string or when WITH_UDEV was not true.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Alter the "real" code to return -2 on virCommandRun failure.
Alter the comments and function header to describe the function
and its returns.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1503284
The way we currently start qemu from CPU affinity POV is as
follows:
1) the child process is set affinity to all online CPUs (unless
some vcpu pinning was given in the domain XML)
2) Once qemu is running, cpuset cgroup is configured taking
memory pinning into account
Problem is that we let qemu allocate its memory just anywhere in
1) and then rely in 2) to be able to move the memory to
configured NUMA nodes. This might not be always possible (e.g.
qemu might lock some parts of its memory) and is very suboptimal
(copying large memory between NUMA nodes takes significant amount
of time).
The solution is to set affinity to one of (in priority order):
- The CPUs associated with NUMA memory affinity mask
- The CPUs associated with emulator pinning
- All online host CPUs
Later (once QEMU has allocated its memory) we then change this
again to (again in priority order):
- The CPUs associated with emulator pinning
- The CPUs returned by numad
- The CPUs associated with vCPU pinning
- All online host CPUs
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This is mainly about /dev/sev and its default permissions 0600. Of
course, rule of 'tinfoil' would be that we can't trust anything, but the
probing code in QEMU is considered safe from security's perspective + we
can't create an udev rule for this at the moment, because ioctls and
file system permissions aren't cross-checked in kernel and therefore a
user with read permissions could issue a 'privileged' operation on SEV
which is currently only limited to root.
https://bugzilla.redhat.com/show_bug.cgi?id=1665400
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The default permissions (0600 root:root) are of no use to the qemu
process so we need to change the owner to qemu iff running with
namespaces.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Instead of exposing /dev/sev to every domain, do it selectively.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
SEV has a limit on number of concurrent guests. From security POV we
should only expose resources (any resources for that matter) to domains
that truly need them.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
We should not give domains access to something they don't necessarily
need by default. Remove it from the qemu driver docs too.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit fb0d0d6c54 added capabilities data and updated
qemucapabilitiestest but forgot to update qemucaps2xmltest
at the same time.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This shows users can now use PCI for RISC-V guests, as long
as they opt into it by manually assigning addresses.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virtio-mmio is still used by default, so if PCI is desired
it's necessary to explicitly opt-in by adding an appropriate
<address type='pci' domain='0x0000' ... />
element to the corresponding device.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This adds an additional directive to the dnsmasq configuration file that
notifies clients via dhcp about the link's MTU. Guests can then choose
adjust their link accordingly.
Signed-off-by: Casey Callendrello <cdc@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This test relies on namespace support, which is only compiled in
if we have the 'fs' and 'netfs' backends.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Instead of repeating the same platform for every test,
set it once, since we do the same tests with the same
input for all platforms, it's just the output that differs.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Only run the pool-netfs-ns-mountopts if built WITH_STORAGE_FS and only
run pool-rbd-ns-configopts if built with WITH_STORAGE_RBD since the
namespace support is only enabled if the pool is enabled.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'qemu' binary used to provide the i386 emulator until it was renamed
to qemu-system-i386 in QEMU 1.0. Since we don't support such old
versions we don't need to check for 'qemu' when probing capabilities.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The custom namespaces were originally registered against the storage
pool source struct, but during review this was changed to the top level
storage pool struct. The namespace URIs were not updated to match, so
had a redundant '/source' component.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Some clients poll virDomainGetBlockJobInfo rather than wait for the
VIR_DOMAIN_BLOCK_JOB_READY event. In some cases qemu can get to 100% and
still not reach the synchronised phase. Initiating a pivot in that case
will fail.
Given that computers are interacting here, the error that the job
can't be finalized yet is not handled very well by those specific
implementations.
Our docs now correctly state to use the event. We already do a similar
output adjustment in case when the progress is not available from qemu
as in that case we'd report 0 out of 0, which some apps also incorrectly
considered as 100% complete.
In this case we subtract 1 from the progress if the ready state is not
signalled by qemu if the progress was at 100% otherwise.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Big number itself does not make much sense in some cases. Format the
bitshift format as well.
Changes our web page docs from:
VIR_MIGRATE_POSTCOPY = 32768 : Setting the VIR_MIGRATE_POSTCOPY...
VIR_MIGRATE_TLS = 65536 : Setting the VIR_MIGRATE_TLS flag...
to:
VIR_MIGRATE_POSTCOPY = 32768 (0x8000; 1 << 15) : Setting the VIR_MIGRATE_POSTCOPY...
VIR_MIGRATE_TLS = 65536 (0x10000; 1 << 16) : Setting the VIR_MIGRATE_TLS flag...
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
A copy+paste mistaken meant the wrong enum -> string convertor
function was used for the error when an incorrect feature capability was
used.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virDomainDeviceInfo parameter is a large struct so it is preferrable
to pass it by reference instead of by value.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The struct _virStorageBackendQemuImgInfo is quite large so it is
preferrable to pass it by reference instead of by value. This requires
us to stop modifying the "compat" field.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The 'rv' variable is never changed after being declared, so can be
removed.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
'val' is initialized from virDomainCapsFeatureTypeFromString and a
few lines earlier there was already a check for 'val < 0'.
The 'val >= 0' is thus always true. The enum conversion similarly
ensures that the val will be less than VIR_DOMAIN_CAPS_FEATURE_LAST,
so "val < VIR_DOMAIN_CAPS_FEATURE_LAST' is thus always true too.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Be more sensible when setting labels of the target of a
virDomainBlockCopy operation. Previously we'd relabel everything in case
it's a copy job even if there's no unlabelled backing chain. Since we
are also not sure whether the backing chain is shared we don't relabel
the chain on completion of the blockjob. This certainly won't play nice
with the image permission relabelling feature.
While this does not fix the case where the image is reused and has
backing chain it certainly sanitizes all the other cases. Later on it
will also allow to do the correct thing in cases where only one layer
was introduced.
The change is necessary as in case when -blockdev will be used we will
need to hotplug the backing chain and thus labeling needs to be setup in
advance and not only at the time of pivot. To avoid multiple code paths
move the labeling now.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rather than passing in a virStorageSource which would override the
originally passed disk->src we can now drop passing in a disk completely
as all functions called inside here require a virStorageSource.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Use the functions designed to deal with single images as the *Disk
functions were just wrappers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Previously there weren't any suitable functions which would allow
setting up host side of a full disk chain so we've opted to replace the
'src' in a virDomainDiskDef by the new image source.
That is now no longer necessary so remove the munging.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that we have replacement in the form of the image labeling function
we can drop the unnecessary functions by replacing all callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The same can be achieved by using qemuSecurity[Set|Restore]ImageLabel.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The flag will control the VIR_SECURITY_DOMAIN_IMAGE_LABEL_BACKING_CHAIN
flag of the security driver image labeling APIs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Security labeling of disks consists of labeling of the disk image
itself and it's backing chain. Modify
virSecurityManager[Set|Restore]ImageLabel to take a boolean flag that
will label the full chain rather than the top image itself.
This allows to delete/unify some parts of the code and will also
simplify callers in some cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since the disk is necessary only to get the source modify the functions
to take the source directly and rename them to
qemu[Setup|Teardown]ImageChainCgroup.
Additionally drop a pointless comment containing the old function name.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When we need to detect a chain for a image which will become the new
source for a disk (e.g. after a disk media change or a blockjob) we'd
need to replace disk->src temporarily to do so.
Move the 'disksrc' temporary variable to an argument and adjust callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The function at first validates the top image of the chain, then
traverses the chain as declared in the XML (if any) and then procedes to
detect the rest of the chain from images. All of the steps have their
own temporary iterator.
Clarify the use scope of the steps by introducing a new temp variable
holding the top level source and adding comments.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Commit f2f84b4d4 added storagepoolxml2argvtest processing; however,
it didn't follow alter the else to !WITH_STORAGE and add the source
itself to the EXTRA_DIST like the other WITH_STORAGE options for
virstorageutiltest and storagevolxml2argvtest.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 7a227688a caused a build failure on mingw. Following
other uses of including ../src/libvirt_driver_storage_impl.la
I moved to under the WITH_STORAGE conditional.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Allow for adjustment of RBD configuration options via Storage
Pool XML Namespace adjustments. When namespace arguments are
used to start the pool, add a VIR_WARN to indicate that the
startup was tainted by custom config_opts.
Based off original patch/concept:
https://www.redhat.com/archives/libvir-list/2014-May/msg00940.html
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
If the Storage Pool Namespace XML data exists, format the mount
options on the MOUNT command line and issue a VIR_WARN to indicate
that the storage pool was tainted by custom mount_opts.
When the pool is started, the options will be generated on the
command line along with the options already defined.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Introduce the virStoragePoolFSMountOptionsDef to be used to
manage the Storage Pool XML Namespace for mount options.
Using a new virStorageBackendNamespaceInit function, set the
virStoragePoolXMLNamespace into the _virStoragePoolOptions when
the storage backend is loaded.
Modify the storagepool.rng to allow for the usage of a different
XML namespace to parse the fs_mount_opts to be included with
the fs and netfs storage pool definitions.
Modify the storagepoolxml2xmltest to utilize a properly modified
XML file to parse and format the namespace for a netfs storage pool.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Introduce the infrastructure necessary to manage a Storage Pool XML
Namespace. The general concept is similar to virDomainXMLNamespace,
except that for Storage Pools the storage backend specific details
can be stored within the _virStoragePoolOptions unlike the domain
processing code which manages its xmlopt's via the virDomainXMLOption
which is allocated/passed around for each domain.
This patch defines the add the parse, format, free, and href methods
required to process the XML and callout from the Storage Pool Def
parse, format, and free API's to perform the action on the XML data
for/from the backend.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Allow the addition of the <protocol ver='n'/> to the provided XML.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
If protocolVer present, add the -o nfsvers=# to the command
line for the NFS Storage Pool
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Add an optional way to define which NFS Server version will be
used to content the target NFS server.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1584663
Modify the command generation to add some default options to the
fs/netfs storage pools based on the OS type. For Linux, it'll be
the "nodev, nosuid, noexec". For FreeBSD, it'll be "nosuid, noexec".
For others, just leave the options alone.
Modify the storagepoolxml2argvtest to handle the fact that the
same input XML could generate different output XML based on whether
Linux, FreeBSD, or other was being built.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Rather than deref off of "caps->guests", let's pass "caps->guests" and
caps->nguests to have the helper use "guests[i]->" instead.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Let's extract out the <guest> code into it's own method/helper.
NB: One minor change between the two is usage of "buf" instead
of "&buf" in the new code since we pass the address of &buf to
the helper.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Rather than deref off of "caps->host.", let's pass "&caps->host"
and make the helper use "host->" instead.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Let's extract out the <host> code into it's own method/helper.
NB: One minor change between the two is usage of "buf" instead
of "&buf" in the new code since we pass the address of &buf to
the helper.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
This reverts commit 8b035c84d8.
The MTTCG impl in QEMU does allow pinning vCPUs.
When the guest is running we already check if pinning is
possible in the qemuDomainPinVcpuLive method, so this
check was adding no benefit.
When the guest is not running, we cannot know whether the
subsequent launch will use MTTCG or TCG, so we must allow
the pinning request. If the guest does use TCG on the next
launch it will fail, but this is no worse than if the user
had done a virDomainDefineXML with an XML doc specifying
vCPU pinning.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
MTTCG is the new multi-threaded impl of TCG which follows
KVM in having one host OS thread per vCPU. Historically
we have discarded all PIDs reported for TCG guests, but
we must now selectively honour this data.
We don't have anything in the domain XML that indicates
whether a guest is using TCG or MTTCG. While QEMU does
have an option (-accel tcg,thread=single|multi), it is
not desirable to expose this in libvirt. QEMU will
automatically use MTTCG when the host/guest architecture
pairing is known to be safe. Only developers of QEMU TCG
have a strong reason to override this logic.
Thus we use two sanity checks to decide if the vCPU
PID information is usable. First we see if the PID
duplicates the main emulator PID, and second we see
if the PID duplicates any other vCPUs.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The transition to the ready state is best observed by events as it's
ansynchronous and does not hint users to do polling. As currently only
the qemu driver supports block copy and block commit and the ready state
event was introduced by qemu 1.3 we can fully switch to the new
approach.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The documentation was only referring to a copy job, but in fact any
running blockjob will have the same results.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add documentation that the 'VIR_DOMAIN_BLOCK_COPY_TRANSIENT_JOB' flag
is auto-assumed if the block copy job is started while the VM is
transient and remove the restriction to define the domain when copy
is running.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Historically firewall rules for virtual networks were added straight
into the base chains. This works but has a number of bugs and design
limitations:
- It is inflexible for admins wanting to add extra rules ahead
of libvirt's rules, via hook scripts.
- It is not clear to the admin that the rules were created by
libvirt
- Each rule must be deleted by libvirt individually since they
are all directly in the builtin chains
- The ordering of rules in the forward chain is incorrect
when multiple networks are created, allowing traffic to
mistakenly flow between networks in one direction.
To address all of these problems, libvirt needs to move to creating
rules in its own private chains. In the top level builtin chains,
libvirt will add links to its own private top level chains.
Addressing the traffic ordering bug requires some extra steps. With
everything going into the FORWARD chain there was interleaving of rules
for outbound traffic and inbound traffic for each network:
-A FORWARD -d 192.168.3.0/24 -o virbr1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.3.0/24 -i virbr1 -j ACCEPT
-A FORWARD -i virbr1 -o virbr1 -j ACCEPT
-A FORWARD -o virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -i virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -d 192.168.2.0/24 -o virbr0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.2.0/24 -i virbr0 -j ACCEPT
-A FORWARD -i virbr0 -o virbr0 -j ACCEPT
-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable
The rule allowing outbound traffic from virbr1 would mistakenly
allow packets from virbr1 to virbr0, before the rule denying input
to virbr0 gets a chance to run.
What we really need todo is group the forwarding rules into three
distinct sets:
* Cross rules - LIBVIRT_FWX
-A FORWARD -i virbr1 -o virbr1 -j ACCEPT
-A FORWARD -i virbr0 -o virbr0 -j ACCEPT
* Incoming rules - LIBVIRT_FWI
-A FORWARD -d 192.168.3.0/24 -o virbr1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -d 192.168.2.0/24 -o virbr0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable
* Outgoing rules - LIBVIRT_FWO
-A FORWARD -s 192.168.3.0/24 -i virbr1 -j ACCEPT
-A FORWARD -i virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -s 192.168.2.0/24 -i virbr0 -j ACCEPT
-A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable
There is thus no risk of outgoing rules for one network mistakenly
allowing incoming traffic for another network, as all incoming rules
are evalated first.
With this in mind, we'll thus need three distinct chains linked from
the FORWARD chain, so we end up with:
INPUT --> LIBVIRT_INP (filter)
OUTPUT --> LIBVIRT_OUT (filter)
FORWARD +-> LIBVIRT_FWX (filter)
+-> LIBVIRT_FWO
\-> LIBVIRT_FWI
POSTROUTING --> LIBVIRT_PRT (nat & mangle)
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Some of the query callbacks want to know the firewall layer that was
being used for triggering the query to avoid duplicating that data.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Allow the platform driver impls to run logic before and after the
firewall reload process.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
disk->mirror would not be cleared while the local pointer was freed in
qemuDomainBlockCommit if qemuDomainObjExitMonitor or qemuBlockJobDiskNew
would return a failure.
Since block job handling is executed in the separate handler which needs
a qemu job, we don't need to pre-set the mirror state prior to starting
the job. Similarly the block copy job does not do that.
Move the setting of the data after starting the job so that we avoid
this problem.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
While this should not be necessary as we clear it in the event handler,
let's be sure and clear it prior to starting the job.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Switching a block job to some states (e.g. QEMU_BLOCKJOB_STATE_READY)
might not require a job, thus if it will become ready asynchronously we
should not overwrite the state any more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
While the callers should make sure that they don't call
qemuBlockJobEmitEvents for any internal state or job, let's add checks
that prevents us from emitting wrong events altogether.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Mixing documentation strings trailing the enum value and preceeding the
enum value ends in a big mixup. Fix docs string for
VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN so that it's not squished together
with the next one.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We have this very handy macro called VIR_STEAL_PTR() which steals
one pointer into the other and sets the other to NULL. The
following coccinelle patch was used to create this commit:
@ rule1 @
identifier a, b;
@@
- b = a;
...
- a = NULL;
+ VIR_STEAL_PTR(b, a);
Some places were clean up afterwards to make syntax-check happy
(e.g. some curly braces were removed where the body become a one
liner).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Document the <bhyve:commandline> element which allows
to inject custom command line arguments for bhyve.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Implement support for passing custom command line arguments
to bhyve using the 'bhyve:commandline' element:
<bhyve:commandline>
<bhyve:arg value='-newarg'/>
</bhyve:commandline>
* Define virDomainXMLNamespace for the bhyve driver, which
at this point supports only the 'commandline' element
described above,
* Update command generation code to inject these command line
arguments between driver-generated arguments and the vmname
positional argument.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
A couple places in the docs didn't get updated when the forward mode
"open" was added.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
networkMigrateStateFiles was added nearly 5 years ago when the network
state directory was moved from /var/lib/libvirt to /var/run/libvirt
just prior to libvirt-1.2.4). It was only required to maintain proper
state information for networks that were active during an upgrade that
didn't involve rebooting the host. At this point the likelyhood of
anyone upgrading their libvirt from pre-1.2.4 directly to 5.0.0 or
later *without rebooting the host* is probably so close to 0 that no
properly informed bookie would take *any* odds on it happening, so it
seems appropriate to remove this pointless code.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Upcoming patches need an array of strings for use in QMP
block-dirty-bitmap-merge. A convenience wrapper cuts down
on the verbosity of creating the array, similar to the
existing virJSONValueObjectAppendString().
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
A function that returns -1 for multiple possible failures, but only
raises a libvirt error for some of those failures, can be hard to
use correctly. Yet both of our JSON object/array appenders fall in
that pattern. True, the silent errors represent coding bugs that
none of the callers should ever trigger, while the noisy errors
represent memory failures that can happen anywhere, so we happened
to never end up failing without an error. But it is better to
either use the _QUIET memory allocation variants, and make callers
decide to report failure; or make all failure paths noisy. This
patch takes the latter approach.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Strictly speaking, this should go near vshCompleter typedef
declaration. However, I find it more useful near actual completer
implementations.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Use qemuBuildControllersCommandLine since it builds the command line
for (nearly) all controllers, not just one.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Now that the inner loop does not require any other variables,
it can be easily separated. Apart from reducing the indentation
level this will allow it to be called from different code paths.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Now that it's no longer needed, remove the argument.
This removes the last helper variable in
qemuBuildControllerDevCommandLine.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
qemuBuildLegacyUSBControllerCommandLine is the only place where
we need to count the USB controllers.
Count them again instead of keeping track in a variable passed to
qemuBuildControllerDevStr.
This removes the need for another variable in the loop in
qemuBuildControllerDevCommandLine.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Count them in qemuBuildLegacyUSBControllerCommandLine to remove
yet another variable accessed from the loop in
qemuBuildControllerDevCommandLine.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
This removes the need to mark it in the 'usbcontroller' variable.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Move out the code formatting "-usb" on the QEMU command line.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Similar to what commit 86dba8f3 did for virPortAllocatorRelease,
ignore port 0 in virPortAllocatorSetUsed.
For all the reasonable use cases the callers already check that
the port is non-zero, however if the port from the XML overflows
unsigned short and turns into 0, it can be set as used by
virPortAllocatorSetUsed but not released by virPortAllocatorRelease.
Also skip port '0' in virPortAllocatorSetUsed to make this behavior
symmetric.
The serenity was disturbed by commit 5dbda5e9 which started using
virPortAllocatorRelease instead of virPortAllocatorSetUsed (false).
https://bugzilla.redhat.com/show_bug.cgi?id=1591645
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
There is no "GNU Lesser General Public License, version 2",
only version 2.1 and later. In "version 2", the license was
still called "Library" instead of "Lesser". So assume that
version 2.1 is meant here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The tools/virt-xml-validate.in file is licensed under the terms of
the GPL, but then says "You should have received a copy of the
GNU *Lesser* General Public License". Thus scratch the "Lesser" here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The bootstrap.conf is licensed under the terms of the LGPL, but then
suggests to "See the GNU General Public License for more details".
That should be the "GNU Lesser General Public License" instead, of
course.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Switch qemuBuildVirtioDevStr to use virDomainDeviceSetData: callers
pass in the virDomainDeviceType and the void * DefPtr. This will
save us from having to repeatedly extend the function argument
list in subsequent patches.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is essentially a wrapper for easily setting the variable
name in virDomainDeviceDef that matches its associated
VIR_DOMAIN_DEVICE_TYPE.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Current code essentially duplicates the same logic, but misses
some cases (like vhost-vsock-device).
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The vhost-scsi device string should depend on the requested
address type, not strictly on the emulated arch. This is the
same logic used by qemuBuildVirtioDevStr, and this particular
path is already tested in the hostdev-scsi-vhost-scsi-ccw tests
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Move the rng->model == VIRTIO check to parse time. This also
allows us to remove similar checks throughout the qemu driver
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
If we validate that memballoon is NONE|VIRTIO at parse time,
we can drop similar checks elsewhere in the qemu driver
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This will be extended in the future, so let's simplify things by
centralizing the checks.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Found that it was missing in formatstorage and had a few typos
in the storage driver page.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
If the two sysfs_path are both NULL, there may be an incorrect
object returned for virNodeDeviceObjListFindBySysfsPath().
This check exists in old interface virNodeDeviceFindBySysfsPath().
e.g.
virNodeDeviceFindBySysfsPath(virNodeDeviceObjListPtr devs,
const char *sysfs_path)
{
...
if ((devs->objs[i]->def->sysfs_path != NULL) &&
(STREQ(devs->objs[i]->def->sysfs_path, sysfs_path))) {
...
}
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Cheng Lin <cheng.lin130@zte.com.cn>
13 bytes in 1 blocks are definitely lost in loss record 44 of 179
at 0x4C2EE6F: malloc (vg_replace_malloc.c:299)
by 0x9514A69: strdup (in /lib64/libc-2.27.so)
by 0x5E60C0B: virStrdup (virstring.c:956)
by 0x54C856F: virHostGetDRMRenderNode (qemuxml2argvmock.c:190)
by 0x57CB4E3: qemuProcessGraphicsSetupRenderNode (qemu_process.c:4860)
by 0x57CB571: qemuProcessSetupGraphics (qemu_process.c:4881)
by 0x57CE01B: qemuProcessPrepareDomain (qemu_process.c:6040)
by 0x57D102E: qemuProcessCreatePretendCmd (qemu_process.c:6975)
by 0x114C1C: testCompareXMLToArgv (qemuxml2argvtest.c:611)
by 0x134B90: virTestRun (testutils.c:174)
by 0x123478: mymain (qemuxml2argvtest.c:1697)
by 0x136BFA: virTestMain (testutils.c:1112)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This partially reverts 00dc991ca1.
2,030 (1,456 direct, 574 indirect) bytes in 14 blocks are definitely lost in loss record 77 of 80
at 0x4C30E96: calloc (vg_replace_malloc.c:711)
by 0x50F83AA: virAlloc (viralloc.c:143)
by 0x5178DFA: virPCIDeviceNew (virpci.c:1753)
by 0x51753E9: virPCIDeviceIterDevices (virpci.c:468)
by 0x5175EB5: virPCIDeviceGetParent (virpci.c:759)
by 0x517AB55: virPCIDeviceIsBehindSwitchLackingACS (virpci.c:2476)
by 0x517AC24: virPCIDeviceIsAssignable (virpci.c:2494)
by 0x10BF27: testVirPCIDeviceIsAssignable (virpcitest.c:229)
by 0x10D14C: virTestRun (testutils.c:174)
by 0x10C535: mymain (virpcitest.c:422)
by 0x10F1B6: virTestMain (testutils.c:1112)
by 0x10CF93: main (virpcitest.c:455)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is a return argument that is to be compared against NULL on
successful return. However, it is not initialized and therefore
relies on callers setting it to NULL prior calling the function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Asserting the value we set four lines earlier in qemuBlockjobState
doesn't buy us any safety (if the public header adds a value, we end
up skipping that value without the compiler warning us of our gap);
what we really want is to assert that the value auto-assigned by the
compiler matches the actual last value in the public headers (as was
done below for qemuBlockJobType). Add useful comments while at it.
Signed-off-by: Eric Blake <eblake@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Upstream apparmor is switching to named profiles. In short,
/usr/sbin/dnsmasq {
becomes
profile dnsmasq /usr/sbin/dnsmasq {
Consequently, any profiles that reference profiles in a peer= condition
need to be updated if the referenced profile switches to a named profile.
Apparmor commit 9ab45d81 switched dnsmasq to a named profile. ATM it is
the only named profile switch that has affected libvirt. Add rules to the
libvirtd profile to reference dnsmasq in peer= conditions by profile name.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
The libxl driver does not set the new memory value in the active domain def
after a successful balloon. This results in the old memory value in
<currentMemory>. E.g.
virsh dumpxml test | grep currentMemory
<currentMemory unit='KiB'>20971520</currentMemory>
virsh setmem test 16777216 --live
virsh dumpxml test | grep currentMemory
<currentMemory unit='KiB'>20971520</currentMemory>
Set the new memory value in active domain def after a successful call to
libxl_set_memory_target().
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We forgot to document the specific fields for the 0x103 and 0x200
sources which are tied to device removal and device hotplug
respectively.
The value description is based on the ACPI 6.2A standard Table 6-207 and
Table 6-208. At the time of writing of this patch the standard can be
accessed e.g. at:
https://www.uefi.org/sites/default/files/resources/ACPI%206_2_A_Sept29.pdf
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The @linkdev is In/Out function parameter as second order
reference pointer so requires first order dereference for
checking NULL which can be the result of virPCIGetNetName().
Fixes: d6ee56d723 (util: change virPCIGetNetName() to not return error if device has no net name)
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Signed-off-by: dann frazier <dann.frazier@canonical.com>
The device xml parser code does not set "model" while parsing the
following XML:
<interface type='hostdev'>
<source>
<address type='pci' domain='0x0002' bus='0x01' slot='0x00' function='0x2'/>
</source>
</interface>
The net->model can be NULL and therefore must be compared using
STREQ_NULLABLE instead of plain STREQ.
Fixes: ac47e4a622 (qemu: replace "def->nets[i]" with "net" and "def->sounds[i]" with "sound")
Fixes: c7fc151eec (qemu: assign virtio devices to PCIe slot when appropriate)
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
libvirt wrongly assumes that VF netdev has to have the
netdev assigned to PF. There is no such requirement in SRIOV standard.
This patch change the virNetDevSwitchdevFeature() function to deal
with SRIOV devices which does not have netdev on PF. Also corrects
one comment about PF netdev assumption.
One example of such devices is ThunderX VNIC.
By applying this change, VF device is used for virNetlinkCommand() as
it is the only netdev assigned to VNIC.
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This adds the virt-aa-helper support for gl enabled graphics devices to
generate rules for the needed rendernode paths.
Example in domain xml:
<graphics type='spice'>
<gl enable='yes' rendernode='/dev/dri/bar'/>
</graphics>
results in:
"/dev/dri/bar" rw,
Special cases are:
- multiple devices with rendernodes -> all are added
- non explicit rendernodes -> follow recently added virHostGetDRMRenderNode
- rendernode without opengl (in egl-headless for example) -> still add
the node
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1757085
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Add a capability check to qemuDomainDefValidate and refuse to start
a domain with VNC graphics if the TLS secret was set in qemu.conf
and it's not supported.
Note that qemuDomainSecretGraphicsPrepare does not generate any
secret data if the capability is not present and qemuBuildTLSx509BackendProps
is not called at all.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add an option that lets the user specify the secret
that unlocks the server TLS key.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Be generic instead of trying to enumerate all the involved
device types.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Instead of hardcoding the TLS creds alias in
qemuBuildGraphicsVNCCommandLine, store it
in the domain private data.
Given that we only support one VNC graphics
and thus have only one alias per-domain,
this is overengineered, but it will allow us
to prepare the secret upfront when we start
supporting encrypted server TLS keys.
Note that the alias is not formatted anywhere
since we won't need to access it after domain
startup.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
A helper function for allocating the virDomainGraphicsDef structure.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The %{extra_release} field was previously populated by data from the old
autobuild.sh file but is no longer used.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The next release of QEMU is going to be 4.0.0. A bit early, but
this adds capabilities data for x86_64 from current qemu git
15bede554162dda822cd762c689edb6fa32b6e3b
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
PolicyKit authentication rules have switched to a JavaScript based
format quite some time ago. See:
http://davidz25.blogspot.com/2012/06/authorization-rules-in-polkit.html
While backwards compat for the old .pkla format is still available, it
makes sense to point people first at the new format.
The SSHPolicyKitSetup wiki page seems pretty stale, so remove the
reference to it.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Switch the function to use VIR_AUTOFREE and VIR_AUTOPTR macros
to get rid of the cleanup section.
Requested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Switch the function to use VIR_AUTOFREE and VIR_AUTOPTR macros
to get rid of the cleanup section.
Requested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Switch the function to use VIR_AUTOFREE and VIR_AUTOPTR macros
to get rid of the cleanup section.
Requested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Switch the function to use VIR_AUTOFREE and VIR_AUTOPTR macros
to get rid of the cleanup section.
Requested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
If a -drive has no image, using image properties makes qemu whine that
they should not be used.
This patch stops formating cache/readonly/... for empty drives
for the pre-blockdev syntax. Unfortunately those parameters can't be
added later when inserting media, but on the other hand qemu will start
with an empty drive.
Since we already were able to start a VM with such config previously due
to qemu ignoring them I've opted just to skip formatting them.
Additionally with -blockdev support it will work as expected as the
image properties will be formatted when adding the image itself which is
not possible without it.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1651457
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Upcomming change will influence CDROM with cache mode so add a test
case.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Ceph in upstream and Fedora has dropped support for building on host
architectures which are 32-bit.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When commit 361c8dc17 added support for hotplugging the i6300esb
watchdog device (first in libvirt-3.9.0), it accidentally contstructed
the commandline for the device_add command before allocating a PCI
address for the device. With no PCI address specified in the command,
the watchdog would simply be placed at the lowest unused PCI slot.
On a 440fx guest, this doesn't cause a problem, because libvirt's PCI
address allocation algorithm would most likely give the same address
anyway (usually a slot on pci-root), so nobody noticed the omission of
address from the command.
But on a Q35 guest, the lowest unused PCI slot is on pcie-root, which
doesn't support hotplug; libvirt knows enough to assign a PCI address
that is on a pcie-to-pci-bridge (because its slots *do* support
hotplug), but qemu doesn't, so if there is no PCI address in the
command, qemu just tries to plug the new device into pcie-root, and
fails because it doesn't support hotplug, e.g.:
error: Failed to attach device from watchdog.xml
error: internal error: unable to execute QEMU command 'device_add':
Bus 'pcie.0' does not support hotplugging
The solution is simply to build the command string after assigning a
PCI address, not before.
Resolves: https://bugzilla.redhat.com/1666559
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If code in the @actualType switch needs to have/know which PCI
Address is being used, then we must assign it earlier. In particular
a vhost-user device needs to call qemuDomainSupportsNicdev which
requires an address to be defined.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
This is the only patch that mixes various augeas entry
groups in one function.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
if virNetClientNew finishes with error before sock is set
to client object then sock does not get unrefed. This is
unexpected by function clients like virNetClientNewUNIX.
Let's make sure sock gets unrefed on any error path.
Next some clients like virNetClientNewLibSSH2 try to unref
sock on virNetClientNew errors. This is not correct even
before this patch because in some cases virNetClientNew
unrefed sock on error path by itself. Let's give up
sock managment to virNetClientNew entirely.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Currently the job name corresponds to the disk the job belongs to. For
jobs which will not correspond to disks we'll need to track the name
separately.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the data is per-job, we don't really need to bother with
finishing the synchronous job handling if the job is already terminated.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than storing the presence of the blockjob in a flag we can bind
together the lifecycle of the job with the lifecycle of the object which
is tracking the data for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Instead of passing in the disk information, pass in the job and name the
function accordingly.
Few callers needed to be modified to have the job pointer handy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The processing function modifies the job state so it should make sure
that the variable holding the new state is cleared properly and not the
caller. The caller should only deal with the job state and not the
transition that happened.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The job error can be safely accessed in the job structure, so we don't
need to propagate it through qemuBlockJobUpdateDisk.
Drop the propagation and refactor any caller that pased non-NULL error.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The same message is reported in 3 distinct places. Move it out into a
single function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a field tracking the current state of job so that it can be queried
later. Until now the job state e.g. that the job is _READY for
finalizing was tracked only for mirror jobs. Add tracking of state for
all jobs.
Similarly to 'qemuBlockJobType' this maps the existing states of the
blockjob from virConnectDomainEventBlockJobStatus to
'qemuBlockJobState' so that we can track some internal states as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify qemuBlockJobSyncBeginDisk to operate on qemuBlockt sJobDataPtr and
rename it accordingly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We can properly track the job type when starting the job so that we
don't have to infer it later.
This patch also adds an enum of block job types specific to qemu
(qemuBlockjobType) which mirrors the public block job types
(virDomainBlockJobType) but allows for other types to be added later
which will not be public.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Block jobs can also happen on objects which are not a disk at a given
point (e.g. the frontend was not hotplugged yet) and thus will be
eventually kept separately. Add a reference back to the disk for
blockjobs which do correspond to a disk.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the job wasn't started, we don't need to end the synchronous job. Add
a note and drop the unnecessary calls.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than directly modifying fields in the qemuBlockJobDataPtr
structure add a bunch of fields which allow to do the transitions.
This will help later when adding more complexity to the job handling.
APIs introduced in this patch are:
qemuBlockJobDiskNew - prepare for starting a new blockjob on a disk
qemuBlockJobDiskGetJob - get the block job data structure for a disk
For individual job state manipulation the following APIs are added:
qemuBlockJobStarted - Sets the job as started with qemu. Until that
the job can be cancelled without asking qemu.
qemuBlockJobStartupFinalize - finalize job startup. If the job was
started in qemu already, just releases
reference to the job object. Otherwise
clears everything as if the job was never
started.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Extract the disk mirroring startup code from the loop into a separate
function to allow cleaner cleanup paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The field is used to note the state the job has transitioned to while
handling the blockjob state change event. Rename the field so that it's
obvious that this is the new state and not the general state of the
blockjob.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reference counting will simplify semantics of the lifecycle of the
object.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When cancelling job after a reconnect we can now use the disk block job
state rather than having to re-detect it in the migration code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we reprobe the status of blockjobs when reconnecting in
addition to handling job status events, the status reprobing can be
removed as we always track the correct status internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Block job state was widely untracked by libvirt across restarts which
was allowed by a stateless block job finishing handler which discarded
disk state and redetected it. This is undesirable since we'll need to
track more information for individual blockjobs due to -blockdev
integration requirements.
In case of legacy blockjobs we can recover whether the job is present at
reconnect time by querying qemu. Adding tracking whether a job is
present will allow simplification of the non-shared-storage cancellation
code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Internally we do a 'block-copy' to accomodate non-shared storage
migration but the code did not fill in that the block job was active on
the disk when starting the copy job. Since we handle block jobs finishes
regardless of having it registered it's not a problem but soon will
become one.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuBlockJobEventProcessLegacy was getting too big. Remove handling of
completed jobs in a separate function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This will handle blockjob finalizing for the old approach so rename it
accordingly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'cleanup' label was accessed only from a jump to 'error'. Consolidate
everyting into 'cleanup'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Struct qemuDomainDiskPrivate was holding multiple variables connected to
a disk block job. Consolidate them into a new struct qemuBlockJobData.
This will also allow simpler extensions to the block job mechanisms.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The blockjob module uses 'qemuDomainAsyncJob' in it's public headers.
As I plan adding a new structure containing job data which will need to
be included in "qemu_domain.h" it's necessary to break the circular
dependency.
Convert 'qemuDomainAsyncJob' type to 'int' as it's an enum.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All the public APIs of the qemu_blockjob module operate on a 'disk'.
Since I'll be adding APIs which operate on a job later let's rename the
existing ones.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is now only called locally. Some code movement was
necessary to avoid forward declarations.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace use of qemuBlockJobEventProcess with the general helper. A small
tweak is required to pass in the 'type' and 'status' of the job via the
appropriate private data variables.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The event reports the disk path to identify the disk which makes sense
only for local disks. Additionally network backed disks like NBD don't
need to have a path so the callback would return NULL.
Report VIR_DOMAIN_EVENT_ID_BLOCK_JOB only for non-empty local disks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Put the emitting of VIR_DOMAIN_EVENT_ID_BLOCK_JOB and
VIR_DOMAIN_EVENT_ID_BLOCK_JOB_2 into a separate function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Instead of copying the default default values upfront
and then wondering whether the user has given us a new default,
leave the per-usage TLS certdirs and secrets empty during
parsing and only fill them afterwards if they weren't provided
by the user.
This means that instead of looking whether the specific certdir
paths match the default default, the Validate function (which
is called in between parsing and setting the defaults) can error
out for missing directories if the value is present, because
it must've come from the user.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Introduce a set of bool variables with the 'present' suffix
to track whether the value was actually specified.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
According to the GNU Make manual, "double-colon rules are
somewhat obscure and not often very useful". Looking at
the few instances we have in libvirt, that certainly seems
to be the case, so just drop them.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit 7282f455a got rid of the VIR_WARNINGS_NO_CAST_ALIGN macro
when refactoring the code and broke the build with clang.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Turns out, that there are few bugs that are not that trivial to
fix (e.g. around block jobs). Instead of rushing in not
thoroughly tested fixes disable the feature temporarily for the
release.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
I had intended to make these changes to commit d40b820c before
pushing, but forgot about it during the day between the initial review
and ACK.
Neither change is significant - just returning immediately when
virNetDevGetName() fails (instead of logging a debug message first)
and eliminating a comment that adds to confusion rather than
eliminating it. Still, the changes should be made to be more
consistent with nearly identical code just a few lines up (added in
commit 7282f455)
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The entry, introduced by commit 3934beb857, ended up
inside a comment instead of the XML document proper, and
as such didn't show up in the generated files.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
When checking the setting of accept_ra, we have assumed that all
routes have a single nexthop, so the interface of the route would be
in the RTA_OIF attribute of the netlink RTM_NEWROUTE message. But
multipath routes don't have an RTA_OIF; instead, they have an
RTA_MULTIPATH attribute, which is an array of rtnexthop, with each
rtnexthop having an interface. This patch adds a loop to look at the
setting of accept_ra of the interface for every rtnexthop in the
array.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
When commit 1d94b3e7 added code to walk the [n]hostdevs list looking
to add shared hostdevs, it should've filtered any hostdevs that were
not SCSI hostdev's.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is about the same number of code lines, but is simpler, and more
consistent with what will be added to check another attribute in a
coming patch.
As a side effect, it
Resolves: https://bugzilla.redhat.com/1583131
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This same operation needs to be done in multiple places, so move the
inline code into a separate function.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is problematic if a callback function wants to send the nlmsghdr
to a library function that has no "const" in its prototype
(e.g. nlmsg_find_attr())
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
These files need to be installed on the system for apparmor
support to work, so they don't belong with examples.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Instead of defining targets conditionally and depending on
them unconditionally, define a couple of variables and
conditionally add targets to them.
In addition to removing a bunch of useless code, this has
the nice effect of no longer requiring the main Makefile.am
to have any knowledge about the contents of the various
snippets it includes.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is consistent with the way we already handle
configuration for other init systems such as upstart and
systemd.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The feature was added to QEMU in 3.1.0 and it is currently blocking
migration, which is expected to change in the future. Luckily 3.1.0 is
new enough to give us migratability hints on each feature via
query-cpu-model-expension, which means we don't need to use the
"migratable" attribute on the CPU map XML.
The kernel calls this feature arch_capabilities and RHEL/CentOS 7.* use
arch-facilities. Apparently some CPU test files were gathered with the
RHEL version of QEMU. Let's update the test files to avoid possible
confusion about the correct naming.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The session daemon is unable to set XATTRs in 'trusted'
namespace because it doesn't run as privileged process.
Therefore, when creating the default qemu config enable
rememberOwner only when running as privileged process.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since its introduction in commit 0977b8aa07 (released in v1.2.14)
qemuAgentGetInterfaces calls qemuAgentCommand with needReply=false,
which allows qemuAgentCommand to return 0 even when it did not get
any reply from the agent.
Set needReply to true, since we dereference it right after.
This can be hit if libvirt is waiting for an event from the agent
(e.g. shutdown) and the agent cannot reply in time (e.g. due to
the guest being shut down), as reported in:
https://bugzilla.redhat.com/show_bug.cgi?id=1663051
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The use of 'lxc://' was mistakenly broken in:
commit 4c8574c85c
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Wed Mar 28 12:49:29 2018 +0100
driver: ensure NULL URI isn't passed to drivers with whitelisted URIs
Allow it again for historical compatibility.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In the previous commit we are using uint64_t for storing subnet
prefix and interface id that qemu reports in
RDMA_GID_STATUS_CHANGED event. We also report them in some debug
messages. This poses a problem because uint64_t can be UL or ULL
depending on the host architecture and hence we wouldn't know
which format to use. Switch to ULL which is big enough and
doesn't suffer from the issue.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This event is emitted on the monitor when a GID table in pvrdma device
is modified and the change needs to be propagate to the backend RDMA
device's GID table.
The control over the RDMA device's GID table is done by updating the
device's Ethernet function addresses.
Usually the first GID entry is determine by the MAC address, the second
by the first IPv6 address and the third by the IPv4 address. Other
entries can be added by adding more IP addresses. The opposite is the
same, i.e. whenever an address is removed, the corresponding GID entry
is removed.
The process is done by the network and RDMA stacks. Whenever an address
is added the ib_core driver is notified and calls the device driver's
add_gid function which in turn update the device.
To support this in pvrdma device we need to hook into the create_bind
and destroy_bind HW commands triggered by pvrdma driver in guest.
Whenever a changed is made to the pvrdma device's GID table a special
QMP messages is sent to be processed by libvirt to update the address of
the backend Ethernet device.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
mingw lacks localtime_r(); we were getting it from gnulib. But since
commit acf522e8 stopped linking examples against gnulib, we are
getting a build failure. Keep the examples standalone, and work
around mingw by using the non-reentrant localtime() (safe since our
examples are single-threaded), and add a necessary exemption to our
syntax check.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
mingw lacks sigaction(); we were getting it from gnulib. But since
commit acf522e8 stopped linking examples against gnulib, we are
getting a build failure. Keep the examples standalone, and work
around mingw by using signal() instead.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
mingw lacks %lld and %zu support in printf(); we were getting it
from gnulib. But since commit acf522e8 stopped linking examples
against gnulib, we are getting a build failure due to -Wformat
flagging these strings. Keep the examples standalone, and work
around mingw by using manual casts to types we can portably print.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The check was concerning itself with whitespace where it
didn't need to, and used some confusing escaping for one
of its regular expressions - which GNU sed was fine with,
but FreeBSD's sed didn't like one bit.
Switch to extended regular expressions (which, incidentally,
were already in use in the same rule when calling grep) and
remove all whitespace handling.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
These were not caught by our current regular expressions
but will be caught by the improved ones we're about to
introduce, so fix them ahead of time.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 0c6ad476 updated gnulib, which rearranged some of the
conditions in gnulib wrapper headers such that compilation
started failing on BSD systems when the normal system <unistd.h>
tried to include another system header but instead got a
gnulib wrapper header in an incomplete state; this is because
gnulib headers only work if <config.h> is included first.
Commit b6f78259 papered over the symptoms of that by including
<config.h> in all the examples. But this logic is backwards -
if our examples are truly meant to be stand-alone, they should
NOT depend on how libvirt was configured, and should NOT
depend on the gnulib fixes for system quirks. In particular,
if an example does not need to link against libgnulib.la,
then it also does not need to use -Ignulib in its compile
flags, and likewise does not need to include <config.h> since
none of the gnulib wrapper headers should be interfering.
So, revert (most of) b6f78259 (except for the bogus pre-patch
use of "config.h" in admin/logging.c: if config.h is included,
it should be via <> rather than "", and must be before any
system headers); then additionally nuke all mention of
<config.h>, -Ignulib, and -llibgnu.la, making all of the
examples truly standalone.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Pulling in gnulib just for the <verify.h> header is rather
expensive, especially since that header does not require us
to link against gnulib. It's better to make the event-test
example be standalone by just open-coding a more limited form
of a verify() macro that depends on modern gcc (we have enough
CI coverage that even though the verify is now a no-op in
older setups, we will still notice if we fail to add an event
- as a quick test, I was still able to provoke a compile
failure on Fedora 29 when deleting a line from domainEvents).
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In a VPATH build, <config.h> is in the builddir (which automake
includes automatically), but it includes <config-post.h> from the
top source directory (which is not automatic); hence, we need to
keep the -I(top_srcdir) directive that was accidentally removed
from commit 7a879323 (the problem is not visible in an in-tree
build).
Signed-off-by: Eric Blake <eblake@redhat.com>
Our use of INCLUDES in Makefile.am hearkens back to when we had to
cater to automake 1.9.6 (thanks, RHEL 5) which lacked AM_CPPFLAGS.
Modern Automake flags a warning that INCLUDES is deprecated, and
now that we mandate RHEL 7 or better (see commit c1bc9c66), we no
longer have to cater to the old spelling. This change will also
make it easier to do per-binary CPPFLAGS.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit c0a8ea45 removed the use of gettextize, and the setting of
GETTEXT_CPPFLAGS, but did not scrub the now-unused variable from
Makefile.am snippets.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similar to the gnulib changes we just incorporated into maint.mk,
it's time to use '$(VC_LIST) | xargs program' instead of
'program $$($(VC_LIST))', in order to bypass the problem of hitting
argv limits due to our large set of files.
Drop several uses of $$files as a temporary variable when we can
instead directly use xargs. While at it, fix a typo in the
prohibit_windows_special_chars error message.
Note that 'grep $pattern $(generate list)' has be be rewritten
as 'generate list | xargs grep $pattern /dev/null' - this is
because for a list that is just long enough, and without /dev/null,
xargs could make a worst-case split of 'grep $pattern all but one;
grep $pattern last' which has different output (grep includes the
filename when there was more than one file, but omits it for a
single file), while our conversion gives 'grep $pattern /dev/null
all but one; grep $pattern /dev/null last'. We are less concerned
about the empty list case (why would we run the syntax check if we
didn't have at least one file?), but grepping /dev/null happens to
produce no output and thus nicely also solves that problem without
relying on the GNU extension of 'xargs -r'.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We already used $(GREP) in some places, but might as well use it
everywhere during syntax check, in line with similar recent gnulib
changes.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In particular, this incorporates Roman's patches to allow
'make syntax-check' to work on BSD with its exec argv
limitations that previously failed when trying to grep the
large number of files present in libvirt.
cfg.mk needs similar changes, but that will be tackled separately.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since gnulib commit 6954995d unistd.h is included via stdlib.h
on BSD systems, which requires config.h to be included first.
Add config.h to the files that use it.
Part of this commit reverts commit 6ee918de74
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Currently, all of the VirtioOptions are under a single <optional>
element, however, neither our parser/formatter or QEMU driver requires
the presence of all the options if only a single one from the set has
been specified, so fix it and silence the schema validator.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In 600462834f we've tried to remove Author(s): lines
from comments at the beginning of our source files. Well, in some
files while we removed the "Author" line we did not remove the
actual list of authors.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
According to the result parsing from xml, add the unarmed property
into QEMU command line:
-device nvdimm,...[,unarmed=on]
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
According to the result parsing from xml, add pmem property
into QEMU command line:
-object memory-backend-file,...[,pmem=on]
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
According to the result parsing from xml, add align property
into QEMU command line:
-object memory-backend-file,...[,align=xxx]
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Deprecate DO_TEST to do nvdimm qemuxml2argvdata tests, because
DO_TEST_CAPS_LATEST is a better choice. The DO_TEST needs
to specify all qemu capabilities and is not easy for scaling.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability tracks if nvdimm has the unarmed attribute or not
for the nvdimm readonly xml attribute.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability tracks if memory-backend-file has the pmem
attribute or not.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability tracks if memory-backend-file has the align
attribute or not.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
NVDIMM emulation will mmap the backend file, it uses host pagesize
as the alignment of mapping address before, but some backends may
require alignments different from the pagesize. So the 'alignsize'
option is introduced to allow specification of the proper alignment:
<devices>
...
<memory model='nvdimm' access='shared'>
<source>
<path>/dev/dax0.0</path>
<alignsize unit='MiB'>2</alignsize>
</source>
<target>
<size unit='MiB'>4094</size>
<node>0</node>
<label>
<size unit='MiB'>2</size>
</label>
</target>
</memory>
...
</devices>
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Before launching a SEV guest we take the base64-encoded guest owner's
data specified in launchSecurity and create files with the same content
under /var/lib/libvirt/qemu/<domain>. The reason for this is that we
need to pass these files on to QEMU which then uses them to communicate
with the SEV firmware, except when it doesn't have permissions to open
those files since we don't relabel them.
https://bugzilla.redhat.com/show_bug.cgi?id=1658112
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Since SEV operates on a per domain basis, it's very likely that all
SEV launch-related data will be created under
/var/lib/libvirt/qemu/<domain_name>. Therefore, when calling into
qemuProcessSEVCreateFile we can assume @libDir as the directory prefix
rather than passing it explicitly.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
The @con type security_context_t is actually a "char *", so the
correct check should be to dereference one more level; otherwise,
we could return/use the NULL pointer later in a subsequent
virSecuritySELinuxSetFileconImpl call (using @fcon).
Suggested-by: Michal Prívozník <mprivozn@redhat.com>
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If virSecuritySELinuxRestoreFileLabel returns 0 or -1 too soon, then
the @newpath will be leaked.
Suggested-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Because missing optional storage source is not error. The patch
address only local files. Fixing other cases is a bit ugly.
Below is example of error notice in log now:
error: virStorageFileReportBrokenChain:427 :
Cannot access storage file '/path/to/missing/optional/disk':
No such file or directory
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Every time we call all domain stats for inactive domain with
unavailable storage source we get error message in logs [1]. It's a bit noisy.
While it's arguable whether we need such message or not for mandatory
disks we would like not to see messages for optional disks. Let's
filter at least for cases of local files. Fixing other cases would
require passing flag down the stack to .backendInit of storage
which is ugly.
Stats for active domain are fine because we either drop disks
with unavailable sources or clean source which is handled
by virStorageSourceIsEmpty in qemuDomainGetStatsOneBlockFallback.
We have these logs for successful stats since 25aa7035d (version 1.2.15)
which in turn fixes 596a13713 (version 1.2.12 )which added substantial
stats for offline disks.
[1] error message example:
qemuOpenFileAs:3324 : Failed to open file '/path/to/optional/disk': No such file or directory
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Introduce caching whether /dev/kvm is usable as the QEMU user:QEMU
group. This reduces the overhead of the QEMU capabilities cache
lookup. Before this patch there were many fork() calls used for
checking whether /dev/kvm is accessible. Now we store the result
whether /dev/kvm is accessible or not and we only need to re-run the
virFileAccessibleAs check if the ctime of /dev/kvm has changed.
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Our code is not bug free. The refcounting I introduced will
almost certainly not work in some use cases. Provide a script
that will remove all the XATTRs set by libvirt so that it can
start cleanly.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This test checks if security label remembering works correctly.
It uses qemuSecurity* APIs to do that. And some mocking (even
though it's not real mocking as we are used to from other tests
like virpcitest). So far, only DAC driver is tested.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We are setting label on kernel, initrd, dtb and slic_table files.
But we never restored it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It helps whe trying to match calls with virSecuritySELinuxSetAllLabel
if the order in which devices are set/restored is the same in
both functions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When iterating over list of paths/disk sources to relabel it may
happen that the process fails at some point. In that case, for
the sake of keeping seclabel refcount (stored in XATTRs) in sync
with reality we have to perform rollback. However, if that fails
too the only thing we can do is warn user.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's important to keep XATTRs untouched (well, in the same state
they were in when entering the function). Otherwise our
refcounting would be messed up.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to what I did in DAC driver, this also requires the
same SELinux label to be used for shared paths. If a path is
already in use by a domain (or domains) then and the domain we
are starting now wants to access the path it has to have the same
SELinux label. This might look too restrictive as the new label
can still guarantee access to already running domains but in
reality it is very unlikely and usually an admin mistake.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It is going to be important to know if the current transaction we
are running is a restore operation or set label operation so that
we know whether to call virSecurityGetRememberedLabel() or
virSecuritySetRememberedLabel(). That is, whether we are in a
restore and therefore have to fetch the remembered label, or we
are in set operation and therefore have to store the original
label.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we have seclabel remembering we can safely restore
labels for shared and RO disks. In fact we need to do that to
keep seclabel refcount stored in XATTRs in sync with reality.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This also requires the same DAC label to be used for shared
paths. If a path is already in use by a domain (or domains) then
and the domain we are starting now wants to access the path it
has to have the same DAC label. This might look too restrictive
as the new label can still guarantee access to already running
domains but in reality it is very unlikely and usually an admin
mistake.
This requirement also simplifies seclabel remembering, because we
can store only one seclabel and have a refcounter for how many
times the path is in use. If we were to allow different labels
and store them in some sort of array the algorithm to match
labels to domains would be needlessly complicated.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Because the implementation that will be used for label
remembering/recall is not atomic we have to give callers a chance
to enable or disable it. That is, enable it if and only if
metadata locking is enabled. Otherwise the feature MUST be turned
off.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We are setting label on kernel, initrd, dtb and slic_table files.
But we never restored it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It helps whe trying to match calls with virSecurityDACSetAllLabel
if the order in which devices are set/restored is the same in
both functions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When iterating over list of paths/disk sources to relabel it may
happen that the process fails at some point. In that case, for
the sake of keeping seclabel refcount (stored in XATTRs) in sync
with reality we have to perform rollback. However, if that fails
too the only thing we can do is warn user.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's important to keep XATTRs untouched (well, in the same state
they were in when entering the function). Otherwise our
refcounting would be messed up.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This file implements wrappers over XATTR getter/setter. It
ensures the proper XATTR namespace is used.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 3072ded3 changed the waya to format the vcpu pinning info
and forget to get cpumap for each vcpu during the loop, that cause
vcpupin command will display vcpu 0 info for other vcpus.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
For consistency, handle the @data "char **" (or remote_string)
assignments and processing similarly between various APIs
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Using a combination of VIR_ALLOC and VIR_STRDUP into a local
variable and then jumping to error on the VIR_STRDUP before
assiging it into the @data would cause a memory leak. Let's
just avoid that by assiging directly into @data.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add guards to avoid calling strchr when @err_noinfo == NULL or
calling virErrorTestMsgFormatInfoOne when @err_info == NULL as
both would fail with a NULL deref.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The virtualization driver has two connections to the virtlogd daemon,
one pipe fd for writing to the log file, and one socket fd for making
RPC calls. The typical sequence is to write some data to the pipe fd and
then make an RPC call to determine the current log file offset.
Unfortunately these two operations are not guaranteed to be handling in
order by virtlogd. The event loop for virtlogd may identify an incoming
event on both the pipe fd and socket fd in the same iteration of the
event loop. It is then entirely possible that it will process the socket
fd RPC call before reading the pending log data from the pipe fd.
As a result the virtualization driver will get an outdated log file
offset reported back.
This can be seen with the QEMU driver where, when a guest fails to
start, it will randomly include too much data in the error message it
has fetched from the log file.
The solution is to ensure we have drained all pending data from the pipe
fd before reporting the log file offset. The pipe fd is always in
blocking mode, so cares needs to be taken to avoid blocking. When
draining this is taken care of by using poll(). The extra complication
is that they might already be an event loop dispatch pending on the pipe
fd. If we have just drained the pipe this pending event will be invalid
so must be discarded.
See also https://bugzilla.redhat.com/show_bug.cgi?id=1356108
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
If an editor has an XML file open, it may create a temporary . file. The
existance of this file will cause the virschematest to fail, so just
skip these editor temp files.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
/domain/memtune/hard_limit provides a way to cap the memory a VM process
can use, including the amount of memory the process can lock. When memory
locking of a VM is requested, <hard_limit> can be used to prevent the
potential host DoS issue mentioned in /domain/memoryBacking/locked
description.
This patch improves the <hard_limit> text by clarifying it can be used
to prevent "host crashing" when VM memory is locked.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
The arguments to the N_() macro must only ever be a literal string. It
is not possible to use macro arguments, or use macro string
concatenation in this context. The N_() macro is a no-op whose only
purpose is to act as a marker for xgettext when it extracts translatable
strings from the source code. Anything other than a literal string will
be silently ignored by xgettext.
Unfortunately this means that the clever MSG, MSG2 & MSG_EXISTS macros
used for building up error message strings have prevented any of the
error messages getting marked for translation. We must sadly, revert to
a more explicit listing of strings for now.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The driver is unmaintained, untested and severely broken for
quite some time now. Since nobody even reported any issue with it
let us drop it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
QEMU can report how many times during post-copy migration the domain
running on the destination host tried to access a page which has not
been migrated yet.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The QEMU command line arguments are very long and currently all written
on a single line to /var/log/libvirt/qemu/$GUEST.log. This introduces
logic to add line breaks after every env variable and "-" optional
argument, and every positional argument. This will create a clearer log
file, which will in turn present better in bug reports when people cut +
paste from the log into a bug comment.
An example log file entry now looks like this:
2018-12-14 12:57:03.677+0000: starting up libvirt version: 5.0.0, qemu version: 3.0.0qemu-3.0.0-1.fc29, kernel: 4.19.5-300.fc29.x86_64, hostname: localhost.localdomain
LC_ALL=C \
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin \
HOME=/home/berrange \
USER=berrange \
LOGNAME=berrange \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu-system-ppc64 \
-name guest=guest,debug-threads=on \
-S \
-object secret,id=masterKey0,format=raw,file=/home/berrange/.config/libvirt/qemu/lib/domain-33-guest/master-key.aes \
-machine pseries-2.10,accel=tcg,usb=off,dump-guest-core=off \
-m 1024 \
-realtime mlock=off \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid c8a74977-ab18-41d0-ae3b-4041c7fffbcd \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=23,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc \
-no-shutdown \
-boot strict=on \
-device qemu-xhci,id=usb,bus=pci.0,addr=0x1 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2018-12-14 12:57:03.730+0000: shutting down, reason=failed
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virCommand APIs do not expect to be given a NULL value for an arg
name or value. Such a mistake can lead to execution of the wrong
command, as the NULL may prematurely terminate the list of args.
Detect this and report suitable error messages.
This identified a flaw in the storage test which was passing a NULL
instead of the volume path. This flaw was then validated by an incorrect
set of qemu-img args as expected data.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We must do a substring match, not an exact match since
there can be an arbitrary virtual path prepended.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Simplify adding of new errors by just adding them to the array of
messages rather than having to add conversion code.
Additionally most of the messages add the format string part as a suffix
so we can avoid some of the duplication by using a macro which adds the
suffix to the original string. This way most messages fit into the 80
column limit and only 3 exceed 100 colums.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Erik Skultety <eskultet@redhat.com>
Clarify how @info is used and what the returned values look like.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Make sure that we don't add any broken error message strings any more.
This ensures that both the version with and without additional info is
populated, the version without info does not have any formatting
modifiers and the version with info has exactly one.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Simplify wording of the error string for VIR_ERR_OPEN_FAILED and
VIR_ERR_CALL_FAILED. The error codes itself are currently unused so it
will not impact any client.
This will simplify upcomming patch which refactors how we convert these.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Few error codes were missing the version of the message with additional
info. In case of the modified messages it's not very likely they'll ever
report any additional data, but for the sake of consistency we should
provide them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Additional information for an error message is either in form of a
string or empty. Fix two offenders. One used %d as the format modifier
and the second one always expected a string.
Thankfully, neither of the offenders are currently in effect.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We do have one for the error domain but not for the error number itself.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Require that all headers are guarded by a symbol named
LIBVIRT_$FILENAME
where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.
Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This introduces a syntax-check script that validates header files use a
common layout:
/*
...copyright header...
*/
<one blank line>
#ifndef SYMBOL
# define SYMBOL
....content....
#endif /* SYMBOL */
For any file ending priv.h, before the #ifndef, we will require a
guard to prevent bogus imports:
#ifndef SYMBOL_ALLOW
# error ....
#endif /* SYMBOL_ALLOW */
<one blank line>
The many mistakes this script identifies are then fixed.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
For some reason, xdr_free uses char * instead of void * for its 2nd
argument which is passed to a custom free routine. Commit
dc54b3ec missed this detail which made the build fail on a number of
platforms. Fix it by explicitly casting the object pointer to char *
just like we do in other places throughout the code base.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
When libvirt is reconnecting to running domain that uses cgroup v2
the QEMU process reports cgroup for the emulator directory because the
main thread is in that cgroup. We need to remove the "/emulator" part
in order to match with the root cgroup directory name for that domain.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The rewrite to support cgroup v2 missed this function. In cgroup v2
we have different files to track tasks.
We would fail to remove cgroup on non-systemd OSes if there is any
extra process assigned to guest cgroup because we would not kill any
process form the guest cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Turns out there some build platforms that must not define MOUNT
or VGCHANGE in config.h... So moving the commands from the storage
backend specific module into a common storage_util module causes
issues for those platforms.
So instead of assuming they are there, let's just pass the command
string to the storage util API's from the storage backend specific
code (as would have been successful before). Also modify the test
to determine whether the MOUNT and/or VGCHANGE doesn't exist and
just define it to (for example) what Fedora has for the path. Could
have just used "mount" and "vgchange" in the call, but that defeats
the purpose of adding the call to virTestClearCommandPath.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The make_nonnull_XXX methods can all fail due to OOM but this was being
silently ignored and thus also not checked by callers. Make the methods
propagate errors and use ATTRIBUTE_RETURN_CHECK to force callers to deal
with it.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.
In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.
With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to find the
author of a particular bit of code.
This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.
The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for nested KVM is handled via a kernel module configuration
parameters values for kvm_intel, kvm_amd, kvm_hv (PPC), or kvm (s390).
While it's possible to fetch the kmod config values via virKModConfig,
unfortunately that is the static value and we need to get the
current/dynamic value from the kernel file system.
So this patch adds a new API virHostKVMSupportsNesting that will
search the 3 kernel modules to get the nesting value and check if
it is 'Y' (or 'y' just in case) to return a true/false whether
the KVM kernel supports nesting.
We need to do this in order to handle cases where adjustments to
the value are made after libvirtd is started to force a refetch of
the latest QEMU capabilities since the correct CPU settings need
to be made for a guest to add the "vmx=on" to/for the guest config.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1656255
If virSecretGetSecretString is using by secretLookupByUUID,
then it's possible the found sec->usageType doesn't match the
desired @secretUsageType. If this occurs for the encrypted
volume creation processing and a subsequent pool refresh is
executed, then the secret used to create the volume will not
be found by the storageBackendLoadDefaultSecrets which expects
to find secrets by VIR_SECRET_USAGE_TYPE_VOLUME.
Add a check to virSecretGetSecretString to avoid the possibility
along with an error indicating the incorrect matched types.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add the logical storage pool startup validation (xml2argv) tests.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
It's only pass as 0 or 1 and used as a bool, let's just use a bool
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Let's create helpers for each style of command line created. This
primarily is easier on the eyes rather than the large multi line
if-then-else-else clause used, but may also be useful if in the
future any particular pool needs to add to the command line based
on pool xml format.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Cover the case where @netauto would be used to create the command
line in virStorageBackendFileSystemMountCmd. Essentially when the
pool type is "netfs", but the "source.format" is empty, create the
command line properly.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Similar to qemuxml2argv and storagevolxml2argv, let's create some
tests to ensure that the XML generates a consistent command line.
Using the same list of pools as storagepoolxml2xmltest, start with
the file system tests (fs, netfs, netfs-cifs, netfs-gluster).
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Move virStorageBackendFileSystemMountCmd to storage_util so that
it can be used by the test harness.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Extract out the code that is used to create the MOUNT command
for starting the pool. We can use this for Storage Pool XML
to Argv testing to ensure code changes don't alter how a
storage pool is started.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624223
There are two ways to request memory preallocation on cmd line:
-mem-prealloc and .prealloc attribute for a memory-backend-file.
However, as it turns out it's not safe to use both at the same
time. If -mem-prealloc is used then qemu will fully allocate the
memory (this is done by actually touching every page that has
been allocated). Then, if .prealloc=yes is specified,
mbind(flags = MPOL_MF_STRICT | MPOL_MF_MOVE) is called which:
a) has to (possibly) move the memory to a different NUMA node,
b) can have no effect when hugepages are in play (thus ignoring user
request to place memory on desired NUMA nodes).
Prefer -mem-prealloc as it is more backward compatible
compared to switching to "-numa node,memdev= + -object
memory-backend-file".
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
So far we have two arguments that we are passing to
qemuBuildMemoryBackendProps() and that are taken from domain
private data: @qemuCaps and @autoNodeset. In the next commit I
will use one more item from there. Therefore, instead of having
it as yet another argument to the function, pass pointer to the
private data object.
There is one change in qemuDomainAttachMemory() where previously
@autoNodeset was NULL but now is priv->autoNodeset (which may be
set). This is safe to do as @autoNodeset is advisory only.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624336
Add a check during virDomainDefCompatibleDevice whether the
domain supports cold/hotplug of a memory module even though
this duplicates the qemuDomainDefValidateMemoryHotplug check.
Without this check, the cold/hot plug would fail on the
subsequent mem_memory check (since it's 0). Adding a check
for max_memory > 0 would allow the subsequent hotplug check
to fail, but would cause coldplug to fail with the somewhat
opaque message "no free memory device slot available".
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
If virDomainDefCompatibleDevice fails because there is insufficient
domain def->mem.max_memory, then let's also print out that value in
the error message.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The QEMU validation code for graphics has been in place for a while, but
because it is only executed from virDomainDeviceInfoIterateInternal, it
was never run, since the iterator expects the device to have boot info
which graphics don't have. The unfortunate side effect of this whole mess
was that a few capabilities were missing from the test suite (as commit
d8266ebe1 demonstrated with graphics-spice-invalid-egl-headless test),
which in turn meant that a few graphics tests which expected a failure
happily accepted any failure the test runtime returned which made them
succeed. The impact of this was that we then allowed to start a domain
with multiple OpenGL-enabled graphics devices.
This patch enables iteration over graphics devices. Unsurprisingly,
a few tests started to fail as a result, so fix those too.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
It's fairly easy to forget to add a capability to the list of
capabilities for a negative test case which might yield (for us) very
unfortunate results. Therefore, introduce negative versions of
DO_TEST_CAPS_LATEST macros, so that real QEMU caps can be used with
tests that expect a failure too.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Validation of domain devices is accomplished via a generic device
iterator which takes a callback, iterates over all kinds of supported
device types and invokes the callback on every single device. However,
there might be cases when we need to alter the behaviour of the
iteration (most notably skip or include a group of devices). Therefore,
this patch introduces iterator flags.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since the code was never run, it would have been very hard to spot this
mistake, especially since the compiler can't really warn about it.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit includes a test case for multiple network definitions. It is
useful right now, but it will be more useful when the index used by LXC
version 3.X is implemented to support this new settings. The version 3.X
is using indexes to specify each network settings.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
This commit fixes a bug when you have multiple network settings defined.
Basically, if you set an IPv6 or IPv4 gateway, it carries on next
network settings. It is happening because the data is not being
initialized when a new network type is defined. So, the old data still
persists into the pointer. Another way to initialized the data was
introduced using memset() to avoid missing attributes from the struct.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rename a variable to make it clear that it holds the client organization
rather than the server organization.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virt-pki-validate tool is extracting components in the x509
certificate Subject field. Unfortunately the regex it is is using is far
too strict, and so truncating valid data. It needs to consider ',' as a
field separator, and if that's not there take all data until the EOL.
With the broken regex:
$ echo " Subject: O=Test,CN=guestHyp1ver" | sed 's+.*CN=\(.[a-zA-Z \._-]*\).*+\1+'
guestHyp
And with the fixed regex
$ echo "Subject: O=Test,CN=guestHyp1ver" | sed 's+.*CN=\([^,]*\).*+\1+'
guestHyp1ver
Reported-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 255e0732 introduced a few graphics-related helpers. The problem
is that virDomainGraphicsNeedsAutoRenderNode returns true if it gets
NULL as a response from virDomainGraphicsNeedsAutoRenderNode. That's
okay for egl-headless because that one always needs a DRM render node,
the same is not true for SPICE though, and unless the XML specifies
<gl enable='yes'> for SPICE, there's no need for any renderer.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Disable external snapshot of a readonly disk for domains as
this operation is not very useful. Such a snapshot is not
possible for active domains but the error message from QEMU
is more cryptic:
error: internal error: unable to execute QEMU command 'transaction':
Could not create file: Permission denied
This error at least makes the error more understandable for
active domains and disallows for inactive domains as well.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If domain is killed with `xl destroy`, libvirt will not notice it and
still report the domain as running. Also trying to destroy the domain
through libvirt will fail. The only way to recover from such a situation
is to restart libvirt daemon. The problem is that even though libxl
report LIBXL_EVENT_TYPE_DOMAIN_DEATH, libvirt ignore it as all the
domain cleanup is done in a function actually destroying the domain. If
destroy is done outside of libvirt, there is no place where it would be
handled.
Fix this by doing domain cleanup in LIBXL_EVENT_TYPE_DOMAIN_DEATH too.
To avoid doing it twice, add a ignoreDeathEvent flag
libxlDomainObjPrivate, set when the domain death is triggered by libvirt
itself.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Since domain was suspended before and on failed wakeup is destroyed,
send an event.
Also, add missing libxlDomainCleanup.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Commit 017dfa27d changed a few switch statements in the LXC code to
have all possible enum values, and in the process changed the switch
statement in virLXCControllerGetNICIndexes() to return an error status
for unsupported interface types, but it erroneously put type='direct'
on the list of unsupported types.
type='direct' (implemented with a macvlan interface) is supported on
LXC, but it's interface shouldn't be placed on the list of interfaces
given to CreateMachineWithNetwork() because the interface is put
inside the container, while CreateMachineWithNetwork() only wants to
know about the parent veths of veth pairs (the parent veth remains on
the host side, while the child veth is put into the container).
Resolves: https://bugzilla.redhat.com/1656463
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virLXCControllerGetNICIndexes() was deciding whether or not to add the
ifindex for an interface's ifname to the list of ifindexes sent to
CreateMachineWithNetwork based on the interface type stored in the
config. This would be incorrect in the case of <interface
type='network'> where the network was giving out macvlan interfaces
tied to a physical device (i.e. when the actual interface type was
"direct").
Instead of checking the setting of "net->type", we should be checking
the setting of virDomainNetGetActualType(net).
I don't think this caused any actual misbehavior, it was just
technically wrong.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The networkxml2firewalltest sets virCommand to dry run mode but doesn't
provide a callback to fill in stdout/stderr. As a result when the
firewall code queries rules it gets a NULL output and so never triggers
the callback to process output.
This trivial change just returns an empty string for the command output
in order to ensure the callback gets triggered. It has no effect right
now, but in future patches this will trigger greater test coverage.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Most of the iptables APIs share code for the add/delete paths, but a
couple were separated. Merge the remaining APIs to facilitate future
changes.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Add support for converting openvswitch interface configuration
to/from libvirt domXML and xl.cfg(5). The xl config syntax for
virtual interfaces is described in detail in the
xl-network-configuration(5) man page. The Xen Networking wiki
also contains information and examples for using openvswitch
in xl.cfg config format
https://wiki.xenproject.org/wiki/Xen_Networking#Open_vSwitch
Tests are added to check conversions of openvswitch tagged and
trunked VLAN configuration.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
It is currently possible to use <interface>s of type openvswitch
with the libxl driver in a non-standard way, e.g.
<interface type='bridge'>
<source bridge='ovsbr0'/>
<mac address='00:16:3e:7a:35:ce'/>
<script path='vif-openvswitch'/>
</interface>
This patch adds support for openvswitch <interface>s specified
in typical libvirt config
<interface type='bridge'>
<source bridge='ovsbr0'/>
<mac address='00:16:3e:7a:35:ce'/>
<virtualport type='openvswitch'/>
</interface>
VLAN tags and trunking are also supported using the extended
syntax for specifying an openvswitch bridge in libxl
BRIDGE_NAME[.VLAN][:TRUNK:TRUNK]
See Xen's networking wiki for more details on openvswitch support
https://wiki.xenproject.org/wiki/Xen_Networking#Open_vSwitch
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 212dc9286 made a generic qemuDomainGetIOThreadsMon which
would fail if the QEMU_CAPS_OBJECT_IOTHREAD didn't exist. Then
commit d1eac927 used that helper for the collection of all domain
stats. However, if the capability doesn't exist, then the entire
stats collection fails. Since the IOThread stats were meant to be
if available only, thus rather than failing if the capability
doesn't exist, let's just not collect the stats. Restore the caps
failure logic for qemuDomainGetIOThreadsLive.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
During qemuConnectGetAllDomainStats if qemuDomainGetStats causes
a failure, then when collecting more than one domain's worth of
statistics the loop in virDomainStatsRecordListFree would call
virDomainFree which would call virResetLastError effectively wiping
out the reason we failed leaving the caller with no idea why the
collection failed.
To fix this, let's Preserve the error and Restore it prior to return
so that a caller such as 'virsh domstats' doesn't get the generic
"error: An error occurred, but the cause is unknown".
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove the disk from tests focusing on other aspects so that change to
-blockdev will touch less tests.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We already have a way stricter check in the code which is doing the
snapshot so duplicating it in the parser does not make much sense. Also
gets rid of an ugly ternary operator.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We are preparing a certain disk source passed in as '@src' so the
individual functions should use that rather than disk->src which
corresponds to the top level element of the chain only.
Without this change TLS and persistent reservations would not work for
backing images of a chain when using -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function clears and frees the passed buffers on success, but not in
one case of failure. Modify the control flow that the args are always
consumed, record it in the docs and remove few pointless cleanup paths
in callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add markers for allowing test debugging if one of the steps fails
without setting a proper error.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1656014
An RNG device can consists of more devices than RND device
itself. For instance, in case of EGD there is a chardev that
connects to EGD daemon and feeds the qemu with random data. When
doing RNG device removal we have to remove the associated chardev
as well.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The way that the code is currently written makes my eyes hurt.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are two functions called from syncNicRxFilterMultiMode:
virNetDevSetRcvAllMulti() and virNetDevSetRcvMulti(). Both of
them return 0 on success and -1 on error. However, currently
their return value is checked for != 0 which conflicts with our
assumptions on retvals: a positive value is still considered
success but with current check it would lead to failure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Just like for SPICE, we need to change the permissions on the DRI device
used as the @rendernode for egl-headless graphics type.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to put the render node DRI device into the
device cgroup list so that users don't need to add it manually via
qemu.conf file.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to put the DRI device into the namespace,
otherwise it will be left out from the DAC relabeling process.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unlike with SPICE and SDL which use the <gl> subelement to enable OpenGL
acceleration, specifying egl-headless graphics in the XML has
essentially the same meaning, thus in case of egl-headless we don't have
a need for the 'enable' element attribute and we'll only be interested
in the 'rendernode' one further down the road.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since we need to specify the rendernode option onto QEMU cmdline, we
need this union member to retain consistency in how we build the
cmdline.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we have QAPI introspection of display types in QEMU upstream,
we can check whether the 'rendernode' option is supported with
egl-headless display type.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We're going to need a bit more logic for egl-headless down the road so
prepare a helper just like for the other display types.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Up until now, we formatted 'rendernode=' onto QEMU cmdline only if the
user specified it in the XML, otherwise we let QEMU do it for us. This
causes permission issues because by default the /dev/dri/renderDX
permissions are as follows:
crw-rw----. 1 root video
There's literally no reason why it shouldn't be libvirt picking the DRM
render node instead of QEMU, that way (and because we're using
namespaces by default), we can safely relabel the device within the
namespace.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
A few simple helpers that allow us to determine whether a graphics can
and will need to make use of a DRM render node.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is the first step towards libvirt picking the first available
render node instead of QEMU. It also makes sense for us to be able to do
that, since we allow specifying the node directly for SPICE, so if
there's no render node specified by the user, we should pick the first
available one. The algorithm used for that is essentially the same as
the one QEMU uses.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Guest network devices can set 'overflow' when there are a number of multicast
ips configured. For virtio_net, the limit is only 64. In this case, the list
of mac addresses is empty and the 'overflow' condition is set. Thus, the guest
will currently receive no multicast traffic in this state.
When 'overflow' is set in the guest, let's turn this into ALLMULTI on the host.
Signed-off-by: Jason Baron <jbaron@akamai.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Support for armv6l qemu guests has been added.
Tested with arm1176 CPU on x86.
Signed-off-by: Stefan Schallenberg <infos@nafets.de>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The schema expects it to match the pattern
v[0-9]+\.[0-9]+\.[0-9]+
which "5.0.0" clearly doesn't, causing the build to fail.
Reported-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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