AArch64 kernels are technically capable of running armv7l binaries.
Though some vendors disable this feature during kernel build, we
need to allow it in LXC.
Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
The build system for libvirt correctly detects the location of blkid
using PKG_CONFIG_PATH environment variable. The file blkid.pc states
that the include flags should be: 'Cflags: -I${includedir}/blkid' but
libvirt searches for blkid.h inside ${includedir}/blkid/blkid, which is
wrong. Until now, the compilation for libvirt succeeded because of pure
luck, as it had -I/usr/include as a CFLAG. This issue was faced while
compiling libvirt on Ubuntu 16.04.2 with bare minimum dev packages and a
custom compiled blkid kept in a non-standard $prefix.
Signed-off-by: Nehal J Wani <nehaljw.kkd1@gmail.com>
In GCC 7 there is a new warning triggered when a switch
case has a conditional statement (eg if ... else...) and
some of the code paths fallthrough to the next switch
statement. e.g.
conf/domain_conf.c: In function 'virDomainChrEquals':
conf/domain_conf.c:14926:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
if (src->targetTypeAttr != tgt->targetTypeAttr)
^
conf/domain_conf.c:14928:5: note: here
case VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE:
^~~~
conf/domain_conf.c: In function 'virDomainChrDefFormat':
conf/domain_conf.c:22143:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
if (def->targetTypeAttr) {
^
conf/domain_conf.c:22151:5: note: here
default:
^~~~~~~
GCC introduced a __attribute__((fallthrough)) to let you
indicate that this is intentionale behaviour rather than
a bug.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Other drivers (like qemu) would like to know if the namespaces
are available therefore it makes sense to move this function to
a shared module.
At the same time, this function had some default namespaces that
are checked with every call. It is not necessary - let callers
pass just those namespaces they are interested in.
With the move the function is renamed to
virProcessNamespaceAvailable.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When changing the metadata via virDomainSetMetadata, we now
emit an event to notify the app of changes. This is useful
when co-ordinating different applications read/write of
custom metadata.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Currently when spawning containers with systemd, the container PID 1
will get moved into the systemd machine slice. Libvirt then manually
moves the libvirt_lxc and qemu-nbd processes into the cgroups associated
with the slice, but skips the systemd controller cgroup. This means that
from systemd's POV, libvirt_lxc and qemu-nbd are still part of the
libvirtd.service unit.
On systemctl daemon-reload, it will notice that libvirt_lxc & qemu-nbd
are in the libvirtd.service unit for the systemd controller, but in the
machine cgroups for resources. Systemd will thus move them back into
the libvirtd.service resource cgroups next time libvirtd is restarted.
This causes libvirtd to kill off the container due to incorrect cgroup
placement.
The solution is to ensure that when moving libvirt_lxc & qemu-nbd, we
also move the systemd cgroup controller placement. Normally this is
not something we ever want todo, but this is a special case as we are
intentionally wanting to move them to a different systemd unit.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In preparation to the code move to virnetdevtap.c, this change:
* renames virNetInterfaceStats to virNetDevTapInterfaceStats
* changes 'path' to 'ifname', to use the same vocable as other
method in virnetdevtap.c.
* Add the attributes checker
We have couple of functions that operate over NULL terminated
lits of strings. However, our naming sucks:
virStringJoin
virStringFreeList
virStringFreeListCount
virStringArrayHasString
virStringGetFirstWithPrefix
We can do better:
virStringListJoin
virStringListFree
virStringListFreeCount
virStringListHasString
virStringListGetFirstWithPrefix
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
New line character in name of domain is now forbidden because it
mess virsh output and can be confusing for users.
Validation of name is done in drivers, after parsing XML to avoid
problems with dissappeared domains which was already created with
new-line char in name.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When user tries to resume already running domain (Qemu or LXC)
VIR_ERR_OPERATION_INVALID error should be raised with message that
domain is already running.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1009008
Change the virDomainChrDef to use a pointer to 'source' and allocate
that pointer during virDomainChrDefNew.
This has tremendous "fallout" in the rest of the code which mainly
has to change source.$field to source->$field.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Modeled after the qemuDomainHostdevPrivatePtr (commit id '27726d8c'),
create a privateData pointer in the _virDomainChardevDef to allow storage
of private data for a hypervisor in order to at least temporarily store
secret data for usage during qemuBuildCommandLine.
NB: Since the qemu_parse_command (qemuParseCommandLine) code is not
expecting to restore the secret data, there's no need to add code
code to handle this new structure there.
Signed-off-by: John Ferlan <jferlan@redhat.com>
This function for some weird reason returns integer instead of
virDomainNetType type. It is important to return the correct type
so that we know what values we can expect.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This initially started as a fix of some debug printing in
virCgroupDetect. However it turned out that other places suffer
from the similar problem. While dealing with pids, esp. in cases
where we cannot use pid_t for ABI stability reasons, we often
chose an unsigned integer type. This makes no sense as pid_t is
signed.
Also, new syntax-check rule is introduced so we won't repeat this
mistake.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Just like virDomainDefPostParseCallback has gained new
parseOpaque argument, we need to follow the logic with
virDomainDeviceDefPostParse.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We want to pass the proper opaque pointer instead of NULL to
virDomainDefParse and subsequently virDomainDefParseNode too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Some callers might want to pass yet another pointer to opaque
data to post parse callbacks. The driver generic one is not
enough because two threads executing post parse callback might
want to see different data (e.g. domain object pointer that
domain def belongs to).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The code for replacing domain's transient definition with the persistent
one is repeated in several places and we'll need to add one more. Let's
make a nice helper for it.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
In the latest glibc, major() and minor() functions are marked as
deprecated (glibc commit dbab6577):
CC util/libvirt_util_la-vircgroup.lo
util/vircgroup.c: In function 'virCgroupGetBlockDevString':
util/vircgroup.c:768:5: error: '__major_from_sys_types' is deprecated:
In the GNU C Library, `major' is defined by <sys/sysmacros.h>.
For historical compatibility, it is currently defined by
<sys/types.h> as well, but we plan to remove this soon.
To use `major', include <sys/sysmacros.h> directly.
If you did not intend to use a system-defined macro `major',
you should #undef it after including <sys/types.h>.
[-Werror=deprecated-declarations]
if (virAsprintf(&ret, "%d:%d ", major(sb.st_rdev), minor(sb.st_rdev)) < 0)
^~
In file included from /usr/include/features.h:397:0,
from /usr/include/bits/libc-header-start.h:33,
from /usr/include/stdio.h:28,
from ../gnulib/lib/stdio.h:43,
from util/vircgroup.c:26:
/usr/include/sys/sysmacros.h:87:1: note: declared here
__SYSMACROS_DEFINE_MAJOR (__SYSMACROS_FST_IMPL_TEMPL)
^
Moreover, in the glibc commit, there's suggestion to keep
ordering of including of header files as implemented here.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The first argument should be const char ** instead of
char **, because this is a search function and as such it
doesn't, and shouldn't, alter the haystack in any way.
This change means we no longer have to cast arrays of
immutable strings to arrays of mutable strings; we still
have to do the opposite, though, but that's reasonable.
<filesystem type='ram' accessmode='passthrough'>
<source usage='524288' units='KiB'/>
<target dir='/dev/shm'/>
</filesystem>
would lead to lxcContainerMountAllFS calling STRPREFIX
on a NLL pointer because it failed to check if fs->src->path
was non-NULL. This is a regression caused by
commit da665fbd48
Author: Olga Krishtal <okrishtal@virtuozzo.com>
Date: Thu Jul 14 16:52:38 2016 +0300
filesystem: adds possibility to use storage pool as fs source
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
<filesystem type='ram' accessmode='passthrough'>
<source usage='524288' units='KiB'/>
<target dir='/dev/shm'/>
</filesystem>
would lead to lxcContainerResolveSymlinks calling
access(NULL) because it failed to check if fs->src->path
was non-NULL. This is a regression caused by
commit da665fbd48
Author: Olga Krishtal <okrishtal@virtuozzo.com>
Date: Thu Jul 14 16:52:38 2016 +0300
filesystem: adds possibility to use storage pool as fs source
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1363773
Imagine that you're creating a transient domain, but for some reason,
starting it fails. That is virLXCProcessStart() returns an error. With
current code, in the error handling code the domain object is removed
from the domain object list, @vm is set to NULL and controls jump to
enjob label where virLXCDomainObjEndJob() is called which dereference vm
leading to instant crash.
The fix is to end the job in the error handling code and only after that
remove the domain from the list and jump onto cleanup label instead of
endjob.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
So commit 306b3a8504 tried mimicking behaviour of commit 540c339a25, but
added a virObjectRef(vm) only after virDomainObjListAdd() in
lxcDomainDefineXMLFlags() and not in lxcDomainCreateXMLWithFiles().
That way undefining a domain that was started with different XML than
defined will leave the domain object in a state with not enough
references to then remove it. Hence any lxcDomainDestroyFlags() called
afterwards crashes the daemon.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1351057
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This patch forces container's init process, to become a session leader,
that is its session ID is made the same as its process ID.
That might seem unnecessary in general, but if we want to checkpoint a
container with CRIU, which is needed for container migration,
we must ensure that the SID of each process inside the container points
to a process that lives in the same PID namespace as the container.
Therefore, we force that the session leader is the init.
Signed-off-by: Katerina Koukiou <k.koukiou@gmail.com>
Any error happening after the hand shake in the lxc controller
will not result in a failure as errors are checked during the handshake.
Move the handshake after the last possible error.
Commit da665fbd introduced the following condition to virLXCProcessEnsureRootFS
and openvzReadFSConf:
if (!(<some_var> = virDomainFSDefNew()) < 0)
which broke the build on fedora with GCC 5.3.1: "logical not is only applied to
the left hand side of comparison".
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Allow to store driver specific data on a per-vcpu basis.
Move of the virDomainDef*Vcpus* functions was necessary as
virDomainXMLOptionPtr was declared below this block and I didn't want to
split the function headers.
(This patch had been pushed earlier in
commit cd5c9f21de, but was reverted in
commit 1549f16832 because it had been
accidentally pushed during the freeze for release 2.0.0)
This patch takes the code out of
lxcContainerRenameAndEnableInterfaces() that adds all IP addresses and
IP routes to the interface, and puts it into a utility function
virNetDevIPInfoAddToDev() in virnetdevip.c so that it can be used by
anyone.
One small change in functionality -
lxcContainerRenameAndEnableInterfaces() previously would add all IP
addresses to the interface while it was still offline, then set the
interface online, and then add the routes. Because I don't want the
utility function to set the interface online, I've moved this up so
the interface is first set online, then IP addresses and routes are
added. This is the same order that the network service from
initscripts (in ifup-ether) does it, so it shouldn't pose any problem
(and hasn't, in the tests that I've run).
(This patch had been pushed earlier in commit
f1e0d0da11, but was reverted in commit
05eab47559 because it had been
accidentally pushed during the freeze for release 2.0.0)
This patch takes the code out of
lxcContainerRenameAndEnableInterfaces() that adds all IP addresses and
IP routes to the interface, and puts it into a utility function
virNetDevIPInfoAddToDev() in virnetdevip.c so that it can be used by
anyone.
One small change in functionality -
lxcContainerRenameAndEnableInterfaces() previously would add all IP
addresses to the interface while it was still offline, then set the
interface online, and then add the routes. Because I don't want the
utility function to set the interface online, I've moved this up so
the interface is first set online, then IP addresses and routes are
added. This is the same order that the network service from
initscripts (in ifup-ether) does it, so it shouldn't pose any problem
(and hasn't, in the tests that I've run).
It makes more sense to have the logging at the lower level so other
callers can share the goodness.
While removing so much stuff from / touching so many lines in
lxcContainerRenameAndEnableInterfaces() (which used to have this
debug/error logging), label names were changed and it was updated to
use the now-more-common method of initializing ret to -1 (failure),
then setting to 0 right before the cleanup label.
a.k.a. <hostdev mode='capabilities' type='net'>.
This replaces the existing nips, ips, nroutes, and routes with a
single virNetDevIPInfo, and simplifies the code by calling that
object's parse/format/clear functions instead of open coding.
These functions all need to be called from a utility function that
must be located in the util directory, so we move them all into
util/virnetdevip.[ch] now that it exists.
Function and struct names were appropriately changed for the new
location, but all code is unchanged aside from motion and renaming.
This patch splits virnetdev.[ch] into multiple files, with the new
virnetdevip.[ch] containing all the functions related to setting and
retrieving IP-related info for a device (both addresses and routes).
