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Extends the context system in the test scripts to allow executing commands
within a guest. Do this without requiring an existing network in the guest
by using socat to run ssh via a vsock connection.
We do need some additional "sleep"s in the tests, because the new
faster dispatch means that sometimes we attempt to connect before
socat has managed to listen.
For now, only use this for the plain "passt" tests. The "passt_in_ns" and
other tests have additional complications we still need to deal with.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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In our test scripts we need to do some ugly parsing of /proc and/or pstree
output in order to get the PIDs of processes running in namespaces so that
we can connect to those namespaces with nsenter or pasta.
This is actually a pretty tricky problem with standard tools. To determine
the PID from the outside of the namespace we need to know how the process
of interest is related to the unshare or pasta process (child? one of
several children? grandchild?) as well as then parsing /proc or ps output.
This is slightly awkward now, and will get worse with future changes I'd
like to make to have processes are dispatched.
The obvious solution would be to have the process of interest (which we
control) report its own PID, but that doesn't work easily, because it is in
a PID namepace and sees only its local PID not the global PID we need to
address it from outside.
To handle this, add a small custom tool, "nsholder". This takes a path
and a mode parameter. In "hold" mode it will create a unix domain socket
bound to the path and listening. In "pid" mode it will get the "hold"ing
process's pid via the unix socket using SO_PEERCRED, which translates
between PID namespaces. In "stop" mode it will send a message to the
socket causing the "hold"ing process to clean up and exit.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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When recording tests or demos with asciinema we generate several temporary
files during post-processing. Add these to the .gitignore file so they're
not accidentally comitted.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Before booting the guest images, the distro test cases need to modify the
guest images, using virt-edit and guestfish, to boot in the way we need.
At present this gets repeated on every test run, even though it's not
really doing anything we want to test for.
In addition many of the images have the same preparation steps leading to
a lot of duplicated stages in the tests. A number of additional images can
be prepared using common steps, even if the ones used now have small
differences.
Therefore move the preparation of most of the guest images to the asset
build phase, where they can be done a single time for multiple test runs,
using a common preparation script. We can even avoid making a copy of the
disk image for booting, by using qemu's -snapshot option.
A few of the distros (openSUSE and older Ubuntu) do need different steps.
For now we don't chage how they are run, they could possibly be handled
more like this in future.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Rather than directly download distro images from the test scripts, handle
all the downloads during the test asset build, then just clone them for
the tests themselves. This avoids repeated downloads which can be very
slow when debugging failing tests.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: Add OPENSUSE_IMGS to DOWNLOAD_ASSETS in Makefile, and note
that xzcat doesn't take a -O option in test/distro/opensuse]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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Apparently qemu's ARM virt machine needs to be explicitly given a firmware
image, rather than just supplying a sane default. Unfortunately the EDK2
firmware image we need isn't in the same place on all host distros.
Currently the test scripts hardcode the Debian location, meaning it will
break on hosts that have it somewhere else. This patch searches multiple
locations for the firmware, and creates a local link during the asset build
phase, which the tests can then use.
For now it only searches the locations used by Debian and Fedora, but
that's a small improvement in robustness already, and can be later improved
further if we need to.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Move the download of mbuto and using it to create a sample initramfs to
the asset build makefile, rather than embedding it in the test scripts
themselves.
The two_guests tests used to use two separate copies of the mbuto
image. As an initramfs the mbuto image is strictly readonly though,
so that's not necessary. So, also use the same image for both guests.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Ignore various files generated during build or test.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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