Rename version to ociVersion according to runtime.md

[WeiZhang555]

* `Root` is path to the container's rootfs which can be useful information to hook, and the official sample runtime implementation--runc--has already added this field as payload to hook, we should add this to the spec.

• Status seems like unnecessary field, because State is payload to
  hook and hook is executed in special time point, e.g.

1. Prestart is a list of hooks to be run before the container process is
   executed, indicating a status of created.
2. Poststart is a list of hooks to be run immediately after the container
   process is started, indicating a status of running.
3. Poststop is a list of hooks to be run after the container process exits,
   indicating a status of stopped.
   So the Status field is redundant.

According to definition of state, we should rename
version field in state.go to ociVersion

Signed-off-by: Zhang Wei zhangwei555@huawei.com

[crosbymichael]

I think status is included because this state object can be used as the output for runtime state <id>

[WeiZhang555]

Oh, my... I'm too confused now, it seems that we have many conflicts between specs and runc.

runc containerState: https://github.com/opencontainers/runc/blob/master/list.go#L24-L41
runc hookState: https://github.com/opencontainers/runc/blob/master/libcontainer/configs/config.go#L246-L252

specs description about container state:
https://github.com/opencontainers/runtime-spec/blob/master/runtime.md#state
specs structure about state:
https://github.com/opencontainers/runtime-spec/blob/master/specs-go/state.go

In my understanding, they should be the same, but currently they conflict with each other.

conflicting fields include:

• "version" vs "ociVersion"
• missing "root" field in specs, and also "root" vs "rootfs"
• missing "status" in hooks
• extra "created" field in runc state
• "bundlePath" vs "bundle"

I'll try to make them synchronous, but the breaking of backward compatibility seems inevitable 😢

[WeiZhang555]

Update:

only update ociVersion field because state.go didn't follow runtime.md

Others:

• missing "root" field in specs, and also "root" vs "rootfs": root is redundant, as we already have bundle, rootfs can be retrieved from bundle/config.md
• missing "status" in hooks: modify runc
• extra "created" field in runc state: keep it only in runc, not add it in spec. Unless all persons agree that it's truly necessary, but this can be discussed seperately.
• "bundlePath" vs "bundle": runc should follow the spec

Please take a look. @opencontainers/runc-maintainers @opencontainers/runtime-spec-maintainers

[wking]

c8f5a56 looks good to me, and seems like a fairly straightforward bugfix.

[hqhq]

LGTM

[vbatts]

LGTM