config: Explicitly put hooks in the runtime namespace #415
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The language from 15dee2e (runtime: Add prestart/poststop hooks, 2015-08-03, opencontainers#34) landed well before we had glossary entries for the runtime and container namespaces (from 5dad125, config-linux: Specify host mount namespace for namespace paths, 2015-12-18, opencontainers#275). Now that we do have language to cover that concept, it's better to explicitly say that hooks run in the runtime namespace instead of leaving it to the reader to extrapolate from the filesystem requirement. With the new namespace wording, the "host's filesystem" wording is somewhat redundant. I've left it in though, because I think it helps to have a more gradual transition from hook paths to namespaces. Signed-off-by: W. Trevor King <wking@tremily.us>
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My last attempt at this sort of wording was in bfe1aba (runtime-config: Require hooks to execute in the host environment, 2015-09-30, #207). Pushback on that attempt revolved around terminology for the runtime/host namespace. Since then, we've landed “runtime namespace” in the glossary via #275, so I think this PR will be uncontroversial ;). |
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LGTM |
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The language from 15dee2e (runtime: Add prestart/poststop hooks,
2015-08-03, #34) landed well before we had glossary entries for the
runtime and container namespaces (from 5dad125, config-linux: Specify
host mount namespace for namespace paths, 2015-12-18, #275). Now that
we do have language to cover that concept, it's better to explicitly
say that hooks run in the runtime namespace instead of leaving it to
the reader to extrapolate from the filesystem requirement.
With the new namespace wording, the "host's filesystem" wording is
somewhat redundant. I've left it in though, because I think it helps
to have a more gradual transition from hook paths to namespaces.
The most recent instance of reader uncertainty is here.