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>
So far the virt-aa-helper tests only checked the return code and thereby
catched aborts like issues failing to parse the XML. But there is one
category of virt-aa-helper issues so far untested - not generating the
expected rule.
This adds a basic grep based checks after each test to match against the
rule that is expected to be added by the test.
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
nvdimm memory is backed by a path on the host. This currently works only via
hotplug where the AppArmor label is created via the domain label callbacks.
This adds the virt-aa-helper support for nvdimm memory devices to generate
rules for the needed paths from the initial guest definition as well.
Example in domain xml:
<memory model='nvdimm'>
<source>
<path>/tmp/nvdimm-base</path>
</source>
<target>
<size unit='KiB'>524288</size>
<node>0</node>
</target>
</memory>
Works to start now and creates:
"/tmp/nvdimm-base" rw,
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1757085
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Input devices can passthrough an event device. This currently works only via
hotplug where the AppArmor label is created via the domain label callbacks.
This adds the virt-aa-helper support for passthrough input devices to generate
rules for the needed paths from the initial guest definition as well.
Example in domain xml:
<input type='passthrough' bus='virtio'>
<source evdev='/dev/input/event0' />
</input>
Works to start now and creates:
"/dev/input/event0" rw,
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1757085
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.
Generated using
$ git grep -El '[[:blank:]][[:blank:]]\\$' | \
grep -E '*\.([chx]|am|mk)$$' | \
while read f; do \
sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
done
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
By Default (without -d) the tests will only print Failures.
So a log should follow general "no message is a good message" style.
But the testfw checks always emit the skip info to stdout. Instead
they should use the redirection that is controlled by -d.
This avoids mesages like the following to clutter the log:
Skipping FW AAVMF32 test. Could not find /usr/share/AAVMF/AAVMF32_CODE.fd
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Some globbing chars in the domain name could be used to break out of
apparmor rules, so lets forbid these when in virt-aa-helper.
Also adding a test to ensure all those cases were detected as bad char.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
This replaces individual tests for firmware locations by
a generic function which will simplify having additional
locations in the future.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
The split firmware and variables files introduced by
https://bugs.debian.org/764918 are in a different directory for
some reason. Let the virtual machine read both.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Our test data used a lot of different qemu binary paths and some
of them were based on downstream systems.
Note that there is one file where I had to add "accel=kvm" because
the qemuargv2xml code parses "/usr/bin/kvm" as virt type="kvm".
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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.
With commit 3f9868a virt-aa-helper stopped working due to missing
DomainGuest in the caps.
The test with -c without arch also needs to be
removed since the new capabilities code uses the host arch when none is
provided.
The vram attribute was introduced to set the video memory but it is
usable only for few hypervisors excluding QEMU/KVM and the old XEN
driver. Only in case of QEMU the vram was used for QXL.
This patch updates the documentation to reflect current code in libvirt
and also changes the cases when we will set the default vram attribute.
It also fixes existing strange default value for VGA devices 9MB to 16MB
because the video ram should be rounded to power of two.
The change of default value could affect migrations but I found out that
QEMU always round the video ram to power of two internally so it's safe
to change the default value to the next closest power of two and also
silently correct every domain XML definition. And it's also safe because
we don't pass the value to QEMU.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1076098
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When using vnc gaphics over a unix socket, virt-aa-helper needs to provide
access for the qemu domain to access the sockfile.
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
When a qemu domain is backed by huge pages, apparmor needs to grant the domain
rw access to files under the hugetlbfs mount point. Add a hook, called in
qemu_process.c, which ends up adding the read-write access through
virt-aa-helper. Qemu will be creating a randomly named file under the
mountpoint and unlinking it as soon as it has mmap()d it, therefore we
cannot predict the full pathname, but for the same reason it is generally
safe to provide access to $path/**.
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
The AppArmor security driver adds only the path specified in the domain
XML for character devices of type 'pipe'. It should be using <path>.in
and <path>.out. We do this by creating a new vah_add_file_chardev() and
use it for char devices instead of vah_add_file(). Also adjust
valid_path() to accept S_FIFO (since qemu chardevs of type 'pipe' use
fifos). This is https://launchpad.net/bugs/832507
Description: Implement AppArmorSetSecurityHostdevLabel() and
AppArmorRestoreSecurityHostdevLabel() for hostdev and pcidev attach.
virt-aa-helper also has to be adjusted because *FileIterate() is used for pci
and usb devices and the corresponding XML for hot attached hostdev and pcidev
is not in the XML passed to virt-aa-helper. The new '-F filename' option is
added to append a rule to the profile as opposed to the existing '-f
filename', which rewrites the libvirt-<uuid>.files file anew. This new '-F'
option will append a rule to an existing libvirt-<uuid>.files if it exists,
otherwise it acts the same as '-f'.
load_profile() and reload_profile() have been adjusted to add an 'append'
argument, which when true will use '-F' instead of '-f' when executing
virt-aa-helper.
All existing calls to load_profile() and reload_profile() have been adjusted
to use the old behavior (ie append==false) except AppArmorSetSavedStateLabel()
where it made sense to use the new behavior.
This patch also adds tests for '-F'.
Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/640993
Description: Check for VIR_DOMAIN_CHR_TYPE in serial ports and add 'rw' for
defined serial ports, parallel ports and channels
Bug-Ubuntu: LP: #578527, LP: #609055
Commit 68719c4bdd added the disk format
probing option. This makes virt-aa-helper-test fail because the domain
config didn't specifiy the disk format and it didn't pass '-p 1' to
virt-aa-helper to allow disk format probing.
Specify the disk format in the domain config. Pass the '-p 1' option
to virt-aa-helper for the test case with two disks. This way this test
also covers this new option.
* src/security/virt-aa-helper.c: get_definition() now calls the new
caps_mockup() function which will parse the XML for os.type,
os.type.arch and then sets the wordsize. These attributes are needed
only to get a valid virCapsPtr for virDomainDefParseString(). The -H
and -b options are now removed from virt-aa-helper (they weren't used
yet anyway).
* tests/virt-aa-helper-test: extend and fixes tests, chmod'ed 755
* configure.in: look for AppArmor and devel
* src/security/security_apparmor.[ch] src/security/security_driver.c
src/Makefile.am: add and plug the new driver
* src/security/virt-aa-helper.c: new binary which is used exclusively by
the AppArmor security driver to manipulate AppArmor.
* po/POTFILES.in: registers the new files
* tests/Makefile.am tests/secaatest.c tests/virt-aa-helper-test:
tests for virt-aa-helper and the security driver, secaatest.c is
identical to seclabeltest.c except it initializes the 'apparmor'
driver instead of 'selinux'
