The backstory for this is that runc 1.2 (opencontainers/runc#3967)
fixed a long-standing bug in our mount flag handling (a bug that crun
still has). Before runc 1.2, when dealing with locked mount flags that
user namespaced containers cannot clear, trying to explicitly clearing
locked flags (like rw clearing MS_RDONLY) would silently ignore the rw
flag in most cases and would result in a read-only mount. This is
obviously not what the user expects.
What runc 1.2 did is that it made it so that passing clearing flags
like rw would always result in an attempt to clear the flag (which was
not the case before), and would (in all cases) explicitly return an
error if we try to clear locking flags. (This also let us finally fix a
bunch of other long-standing issues with locked mount flags causing
seemingly spurious errors).
The problem is that podman sets rw on all mounts by default (even if
the user doesn't specify anything). This is actually a no-op in
runc 1.1 and crun because of a bug in how clearing flags were handled
(rw is the absence of MS_RDONLY but until runc 1.2 we didn't correctly
track clearing flags like that, meaning that rw would literally be
handled as if it were not set at all by users) but in runc 1.2 leads to
unfortunate breakages and a subtle change in behaviour (before, a ro
mount being bind-mounted into a container would also be ro -- though
due to the above bug even setting rw explicitly would result in ro in
most cases -- but with runc 1.2 the mount will always be rw even if
the user didn't explicitly request it which most users would find
surprising). By the way, this "always set rw" behaviour is a departure
from Docker and it is not necesssary.
Signed-off-by: rcmadhankumar <madhankumar.chellamuthu@suse.com>
* Add which python client is being used to run tests, see "python
client" below.
* Remove redundate code from test classes
* Update/Add comments to modules and classes
======================================================= test session starts ========================================================
platform linux -- Python 3.10.0, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
python client -- DockerClient
rootdir: /home/jhonce/Projects/go/src/github.com/containers/podman
plugins: requests-mock-1.8.0
collected 33 items
test/python/docker/compat/test_containers.py ...s.............. [ 54%]
test/python/docker/compat/test_images.py ............ [ 90%]
test/python/docker/compat/test_system.py ... [100%]
Note: Follow-up PRs will verify the test results and expand the tests.
Signed-off-by: Jhon Honce <jhonce@redhat.com>
Docker/Moby always create the working directory, and some tools
rely on that behavior (example, woodpecker/drone).
Fixes#11842
Signed-off-by: Michael Scherer <misc@redhat.com>
Python tests were flaking because they behave differently
when $DEBUG is set. It looks like something in CI sets
that envariable.
Solution: do not use $DEBUG as a debug trigger, use a
properly-named custom variable that is unlikely to be
set accidentally.
Also: get rid of AssertTrue(), which gives no visibility
into what happened. Write in proper form that can emit
useful diagnostics on failure.
Fixes: #10948
Signed-off-by: Ed Santiago <santiago@redhat.com>
The multi-image load test was failing on non-x86_64 arch,
because the images used by the test (:00000000, :20200902)
did not have manifests for the given arch.
Solution: all we need are two nonlocal images. Use the
predefined NONLOCAL_IMAGE for one, and a new :multiimage
tag (manually created, currently == :20210610) for the other.
Document, so if/when RHEL adds new supported arches, the
test will fail but a maintainer will have a clue what to do.
Also, as long as I'm in here: add 'image prune -f' to teardown
in build.bats, to avoid seeing lots of red "stray image"
warnings in test logs.
Also: skip a broken/flaky python test
Signed-off-by: Ed Santiago <santiago@redhat.com>
If mounting to existing directory the uid/gid should be preserved.
Primary uid/gid of container shouldn't be used.
Signed-off-by: Matej Vasek <mvasek@redhat.com>
* Introduce sub-package compat to meet packaging and import requirements
* Update documenation for running tests
* Add requirements.txt to improve IDE support
Signed-off-by: Jhon Honce <jhonce@redhat.com>
