[4.8] libct/init_linux: retry chdir to fix EPERM #43
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Alas, the EPERM on chdir saga continues...
Unfortunately, the there were two releases between when opencontainers/runc@5e0e67d was released
and when the workaround opencontainers/runc#2712 was added.
Between this, folks started relying on the ability to have a workdir that the container user doesn't have access to.
Since this case was previously valid, we should continue support for it.
Now, we retry the chdir:
Once at the top of the function (to catch cases where the runc user has access, but container user does not)
and once after we setup user (to catch cases where the container user has access, and the runc user does not)
Add a test case for this as well.
cherry-pick of opencontainers/runc@6ce2d63
Signed-off-by: Peter Hunt [email protected]