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tests/exec: expect 127 exit code for missing executable #3290

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merged 2 commits into from
Sep 30, 2024

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@laurazard laurazard commented Sep 27, 2024

The Docker Engine has always returned 126 when starting an exec fails due to a missing binary, but this was due to a bug in the daemon causing the correct exit code to be overwritten in some cases – see: moby/moby#45795

Change tests to expect correct exit code (127).

Note: Must take some care to what's the best way to fix this without breaking engine or vice-versa, due to the engine running tests against docker-py and docker-py running tests against the engine. It might be necessary to 1st. skip the test, then fix the engine, then fix/unskip the test.

@laurazard laurazard requested a review from thaJeztah September 27, 2024 12:54
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PR to fix the breaking docker-py test: #3290

I called it out there, but we'll need to TAL at the dependencies between the engine and docker-py. Docker-py runs integration tests against the engine, and the engine uses docker-py to run tests, so changing it in either place first is a bit annoying. We might need to skip the test in docker-py -> change the engine behavior -> unskip+fix the test in docker-py, and update the engine version it runs against.

@laurazard laurazard force-pushed the exec-no-executable-exit-code branch from 3235d5c to a252402 Compare September 27, 2024 14:13
Docker Engine has always returned `126` when starting an exec fails due
to a missing binary, but this was due to a bug in the daemon causing the
correct exit code to be overwritten in some cases – see: moby/moby#45795

Change tests to expect correct exit code (`127`).

Signed-off-by: Laura Brehm <[email protected]>
@laurazard laurazard force-pushed the exec-no-executable-exit-code branch from a252402 to cd2d263 Compare September 27, 2024 14:33
laurazard added a commit to laurazard/moby that referenced this pull request Sep 27, 2024
Temporarily skip the exec run failed exit code test in `docker-py` –
https://github.com/docker/docker-py/blob/a3652028b1ead708bd9191efb286f909ba6c2a49/tests/integration/models_containers_test.py#L356-L363

We can reenable this after the PR fixing the expected exit code in that
test is merged/released/included – docker/docker-py#3290

Signed-off-by: Laura Brehm <[email protected]>
@laurazard laurazard force-pushed the exec-no-executable-exit-code branch 3 times, most recently from 128ae9a to f0048c1 Compare September 30, 2024 13:06
Execs should return the exit code of the exec'd process, if it started.

Signed-off-by: Laura Brehm <[email protected]>
@laurazard laurazard force-pushed the exec-no-executable-exit-code branch from f0048c1 to b126547 Compare September 30, 2024 13:07
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It's passing now @thaJeztah 🎉

@laurazard laurazard requested a review from thaJeztah September 30, 2024 13:13
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LGTM, thanks!

@thaJeztah thaJeztah merged commit e031cf0 into docker:main Sep 30, 2024
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maggie44 pushed a commit to maggie44/moby that referenced this pull request Dec 8, 2024
Temporarily skip the exec run failed exit code test in `docker-py` –
https://github.com/docker/docker-py/blob/a3652028b1ead708bd9191efb286f909ba6c2a49/tests/integration/models_containers_test.py#L356-L363

We can reenable this after the PR fixing the expected exit code in that
test is merged/released/included – docker/docker-py#3290

Signed-off-by: Laura Brehm <[email protected]>
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2 participants