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Before a container can be restored, the mounts must be configured.
The root and submounts and their key information is compiled into a
RestoreEnvironment.
Future code will be added to set this created environment before
restoring a container.
Tests to ensure the correct environment were added.
PiperOrigin-RevId: 201544637
Change-Id: Ia894a8b0f80f31104d1c732e113b1d65a4697087
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It prints sandbox stacks to the log to help debug stuckness. I expect
that many more options will be added in the future.
PiperOrigin-RevId: 201405931
Change-Id: I87e560800cd5a5a7b210dc25a5661363c8c3a16e
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A file descriptor was added as a flag to boot so a state file can restore a
container that was checkpointed.
PiperOrigin-RevId: 201068699
Change-Id: I18e96069488ffa3add468861397f3877725544aa
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runsc now mounts the devpts filesystem, so you get a real terminal using
ssh+sshd.
PiperOrigin-RevId: 200244830
Change-Id: If577c805ad0138fda13103210fa47178d8ac6605
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PiperOrigin-RevId: 199808391
Change-Id: Ib37a4fb6193dc85c1f93bc16769d6aa41854b9d4
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This is another step towards multi-container support.
Previously, we delivered signals directly to the sandbox process (which then
forwarded the signal to PID 1 inside the sandbox). Similarly, we waited on a
container by waiting on the sandbox process itself. This approach will not work
when there are multiple containers inside the sandbox, and we need to
signal/wait on individual containers.
This CL adds two new messages, ContainerSignal and ContainerWait. These
messages include the id of the container to signal/wait. The controller inside
the sandbox receives these messages and signals/waits on the appropriate
process inside the sandbox.
The container id is plumbed into the sandbox, but it currently is not used. We
still end up signaling/waiting on PID 1 in all cases. Once we actually have
multiple containers inside the sandbox, we will need to keep some sort of map
of container id -> pid (or possibly pid namespace), and signal/kill the
appropriate process for the container.
PiperOrigin-RevId: 197028366
Change-Id: I07b4d5dc91ecd2affc1447e6b4bdd6b0b7360895
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PiperOrigin-RevId: 195049322
Change-Id: I09f6dd58cf10a2e50e53d17d2823d540102913c5
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PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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