This patch adds feature for lxc containers to inherit namespaces.
This is very similar to what lxc-tools or docker provides. Look
for "man lxc-start" and you will find that you can pass command
args as [ --share-[net|ipc|uts] name|pid ]. Or check out docker
networking option in which you can give --net=container:NAME_or_ID
as an option for sharing +namespace.
>From this patch you can add extra libvirt option to share
namespace in following way.
<lxc:namespace>
<lxc:sharenet type='netns' value='red'/>
<lxc:shareipc type='pid' value='12345'/>
<lxc:shareuts type='name' value='container1'/>
</lxc:namespace>
The netns option is specific to sharenet. It can be used to
inherit from existing network namespace.
Co-authored: Daniel P. Berrange <berrange@redhat.com>
Commit f1f68ca334 overused mdir_name()
event though it was not needed in the latest version, hence labelling
directory one level up in the tree and not the one it should.
If anyone with SElinux managed to try run a domain with guest agent set
up, it's highly possible that they will need to run 'restorecon -F
/var/lib/libvirt/qemu/channel/target' to fix what was done.
Reported-by: Luyao Huang <lhuang@redhat.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1253107
Make a call virCgroupGetBlkioWeight to re-read blkio.weight right
after it is set in order to keep internal data up-to-date.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Commit aa2cc7 modified a previously unnecessary but innocuous check
for interface IP address during interface update incorrectly, causing
all attempted updates (e.g. changing link state) to interfaces of
type='ethernet' for QEMU to fail.
This patch fixes the issue by completely removing the check for IP
address, which is pointless since QEMU doesn't support setting
interface IP addresses from the domain interface XML anyway.
Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
Signed-off-by: Laine Stump <laine@laine.org>
We will try to set the node to cpuset.mems without check if
it is available, since we already have helper to check this.
Call virNumaNodesetIsAvailable to check if node is available,
then try to change it in the cgroup.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Remove unused variable, tag unused parameter and adjust return type.
introduced by 3f48345f7e
CC security/libvirt_security_manager_la-security_selinux.lo
security/security_selinux.c: In function 'virSecuritySELinuxDomainSetDirLabel':
security/security_selinux.c:2520:5: error: return makes pointer from integer without a cast [-Werror]
security/security_selinux.c:2514:9: error: unused variable 'ret' [-Werror=unused-variable]
security/security_selinux.c:2509:59: error: unused parameter 'mgr' [-Werror=unused-parameter]
While a zero allocation in safezero should be fine it isn't when we use
posix_fallocate which returns EINVAL on a zero allocation.
While we could skip the zero allocation in safezero_posix_fallocate it's
an optimization to do it for all allocations.
This fixes vm installation via virtinst for me which otherwise aborts
like:
Starting install...
Retrieving file linux... | 5.9 MB 00:01 ...
Retrieving file initrd.gz... | 29 MB 00:07 ...
ERROR Couldn't create storage volume 'virtinst-linux.sBgds4': 'cannot fill file '/var/lib/libvirt/boot/virtinst-linux.sBgds4': Invalid argument'
The error was introduced by e30297b0 as spotted by Chunyan Liu
We forbid access to /usr/share/, but (at least on Debian-based systems)
the Open Virtual Machine Firmware files needed for booting UEFI virtual
machines in QEMU live in /usr/share/ovmf/. Therefore, we need to add
that directory to the list of read only paths.
A similar patch was suggested by Jamie Strandboge <jamie@canonical.com>
on https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1483071.
First check overrides, then read only files then restricted access
itself.
This allows us to mark files for read only access whose parents were
already restricted for read write.
Based on a proposal by Martin Kletzander
The output of that function was not tested until now. In order to keep
the paths in /tmp, the test driver config is "fixed" as well.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
We are automatically generating some socket paths for domains, but all
those paths end up in a directory that's the same for multiple domains.
The problem is that multiple domains can each run with different
seclabels (users, selinux contexts, etc.). The idea here is to create a
per-domain directory labelled in a way that each domain can access its
own unix sockets.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1146886
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
SELinux security driver already does that, but DAC driver somehow missed
the memo. Let's fix it so it works the same way.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
In virSecuritySELinuxSetSecurityChardevLabel() we are labelling unix
socket path, but accessing another structure of the union. This does
not pose a problem currently as both paths are at the same offset, but
this should be fixed for the future.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Now that we have virNetDaemon object holding all the data and being
capable of referencing multiple servers, having a duplicate reference to
a single server stored in virLockDaemon isn't necessary anymore. This
patch removes the above described element.
JSON data that are used to initialize tests in virnetdaemontest should
be in a consistent format, i.e. not using tabs for indentation, those
should be replaced by spaces.
While the check is appropriate for eg. the x86 and generic drivers,
there are some valid ppc64 guest configurations where the CPU
model is supposed to be NULL.
Moving this check from the generic code to the drivers makes it
possible to accomodate both use cases.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1251927
Not all combinations of host CPU models and compatibility modes
are valid, so we need to make sure we don't try to do something
that QEMU will reject.
Moreover, we need to apply a different logic to guests using
host-model and host-passthrough modes when testing them for host
compatibility.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1251927
If a guest CPU is defined using
<cpu mode='host-model'/>
the <model> sub-element will contain the compatibility mode to use.
That means we can't just copy the host CPU model on cpuUpdate(),
otherwise we'll overwrite that information and migration of such
guests will fail.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1251927
Commit a2c5d16a70 switched to generating
libvirt_admin.syms, but forgot to add the generated file into
.gitignore, hence causing tree pollution post-build.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Since iothreadid = 0 is invalid, we need to check for it when attempting
to add a disk; otherwise, someone would think/believe their attempt to
add an IOThread to the disk would succeed. Luckily other code ignored
things when ->iothread == 0...
Since we're linking this into libvirtd we need some symbols to be public
but not part of the public API so mark them as
LIBVIRT_ADMIN_PRIVATE_<VERSION> as we do with libvirt.
Making all other symbols local makes sure we don't accidentally leak
unwanted ones.
Commit 89c509a0 added getters for cgroup block device I/O throttling,
however stub versions of these functions have not matching function
prototypes that result in compilation fail on platforms not supporting
cgroup.
Fix build by correcting prototypes of the stubbed functions.
Pushing under build-breaker rule.
The problem here is that there are some values that kernel accepts, but
does not set them, for example 18446744073709551615 which acts the same
way as zero. Let's do the same thing we do with other tuning options
and re-read them right after they are set in order to keep our internal
structures up-to-date.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1165580
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The problem here is that there are some values that kernel accepts, but
does not set them, for example 18446744073709551615 which acts the same
way as zero. Let's do the same thing we do with other tuning options
and re-read them right after they are set in order to keep our internal
structures up-to-date.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This function translates device paths to "major:minor " string, and all
virCgroupSetBlkioDevice* functions are modified to use it. It's a
cleanup with no functional change.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
That function takes string list and returns first string in that list
that starts with the @prefix parameter with that prefix being skipped as
the caller knows what it starts with (also for easier manipulation in
future).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1251886
Since iothread_id == 0 is an invalid value for QEMU let's point
that out specifically. For the IOThreadDel code, the failure would
have ended up being a failure to find the IOThread ID; however, for
the IOThreadAdd code - an IOThread 0 was added and that isn't good.
It seems during many reviews/edits to the code the check for
iothread_id = 0 being invalid was lost - it could have originally
been in the API code, but requested to be moved - I cannot remember.
The comment for the function indicated that iothread_id had to be
a positive non-zero value; however, that wasn't checked - that is
a value of 0 is/was allowed by the API and was left up to the
hypervisor to reject the value.
More than likely this nuance was missed during the many "adjustments"
to the API in the review phase.
Allow 0 as an iothread_id and force the hypervisor to handle.
The qemuDomainPinIOThread API will look up the iothread_id of
0 and not find it and message that anyway.
Just like in commit 704cf06, if virCgroup*() fails, the error is
already reported. There's no need to overwrite the error with a
generic one and possibly hiding the true root cause of the error.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Fix inconsistency between function description and actual
parameter name in virConfGetValue/virConfSetValue.
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
When looking up a domain, we try to look up by ID, UUID and NAME
consequently while not really caring which of those lookups succeeds.
The problem is that if any of them fails, we dispatch the error from the
driver and that means setting both threadlocal and global error. Let's
say the last lookup (by NAME) succeeds and resets the threadlocal error as any
other API does, however leaving the global error unchanged. If the underlying
virsh command does not succeed afterwards, our cleanup routine in
vshCommandRun ensures that no libvirt error will be forgotten and that's
exactly where this global error comes in incorrectly.
# virsh domif-setlink 123 vnet1 up
error: interface (target: vnet1) not found
error: Domain not found: no domain with matching id 123
This patch also resets the global error which would otherwise cause some
minor confusion in reported error messages.
https://bugzilla.redhat.com/show_bug.cgi?id=1254152
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Ever since commit e44b0269, 64-bit mingw compilation fails with:
../../src/util/virprocess.c: In function 'virProcessGetPids':
../../src/util/virprocess.c:628:50: error: passing argument 4 of 'virStrToLong_i' from incompatible pointer type [-Werror=incompatible-pointer-types]
if (virStrToLong_i(ent->d_name, NULL, 10, &tmp_pid) < 0)
^
In file included from ../../src/util/virprocess.c:59:0:
../../src/util/virstring.h:53:5: note: expected 'int *' but argument is of type 'pid_t * {aka long long int *}'
int virStrToLong_i(char const *s,
^
cc1: all warnings being treated as errors
Although mingw won't be using this function, it does compile the
file, and the fix is relatively simple.
* src/util/virprocess.c (virProcessGetPids): Don't assume pid_t
fits in int.
Signed-off-by: Eric Blake <eblake@redhat.com>
It may happen that user (mistakenly) wants to rename a domain to
itself. Which is no renaming at all. We should reject that with
some meaningful error message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
