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libcontainer: Store state.json before sync procRun

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If the procRun state has been synced and the runc-create process has
been killed for some reason, the runc-init[2:stage] process will be
leaky. And the runc command also fails to parse root directory because
the container doesn't have state.json.

In order to make it possible to clean the leaky runc-init[2:stage]
process , we should store the status before sync procRun.

```before
current workflow:

[  child  ] <-> [   parent   ]

procHooks   --> [run hooks]
            <-- procResume

procReady   --> [final setup]
            <-- procRun

                ( killed for some reason)
                ( store state.json )
```

```expected
expected workflow:

[  child  ] <-> [   parent   ]

procHooks   --> [run hooks]
            <-- procResume

procReady   --> [final setup]
                store state.json
            <-- procRun
```

Signed-off-by: Wei Fu <fuweid89@gmail.com>
This commit is contained in:
Wei Fu
2020-09-07 15:04:04 +08:00
parent cbb0a79322
commit ba0246da75
2 changed files with 24 additions and 11 deletions
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libcontainer/container_linux.go
+1 -11
View File
@@ -369,18 +369,8 @@ func (c *linuxContainer) start(process *Process) error {
}
return newSystemErrorWithCause(err, "starting container process")
}
// generate a timestamp indicating when the container was started
c.created = time.Now().UTC()
if process.Init {
c.state = &createdState{
c: c,
}
state, err := c.updateState(parent)
if err != nil {
return err
}
c.initProcessStartTime = state.InitProcessStartTime
if process.Init {
if c.config.Hooks != nil {
s, err := c.currentOCIState()
if err != nil {