diff options
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/control/state.go | 1 | ||||
| -rw-r--r-- | pkg/sentry/kernel/kernel.go | 50 | ||||
| -rw-r--r-- | pkg/sentry/kernel/shm/shm_refs.go | 2 |
3 files changed, 43 insertions, 10 deletions
diff --git a/pkg/sentry/control/state.go b/pkg/sentry/control/state.go index d800f2c85..62eaca965 100644 --- a/pkg/sentry/control/state.go +++ b/pkg/sentry/control/state.go @@ -62,6 +62,7 @@ func (s *State) Save(o *SaveOpts, _ *struct{}) error { Callback: func(err error) { if err == nil { log.Infof("Save succeeded: exiting...") + s.Kernel.SetSaveSuccess(false /* autosave */) } else { log.Warningf("Save failed: exiting...") s.Kernel.SetSaveError(err) diff --git a/pkg/sentry/kernel/kernel.go b/pkg/sentry/kernel/kernel.go index 2cdcdfc1f..b8627a54f 100644 --- a/pkg/sentry/kernel/kernel.go +++ b/pkg/sentry/kernel/kernel.go @@ -214,9 +214,11 @@ type Kernel struct { // netlinkPorts manages allocation of netlink socket port IDs. netlinkPorts *port.Manager - // saveErr is the error causing the sandbox to exit during save, if - // any. It is protected by extMu. - saveErr error `state:"nosave"` + // saveStatus is nil if the sandbox has not been saved, errSaved or + // errAutoSaved if it has been saved successfully, or the error causing the + // sandbox to exit during save. + // It is protected by extMu. + saveStatus error `state:"nosave"` // danglingEndpoints is used to save / restore tcpip.DanglingEndpoints. danglingEndpoints struct{} `state:".([]tcpip.Endpoint)"` @@ -1481,12 +1483,42 @@ func (k *Kernel) NetlinkPorts() *port.Manager { return k.netlinkPorts } -// SaveError returns the sandbox error that caused the kernel to exit during -// save. -func (k *Kernel) SaveError() error { +var ( + errSaved = errors.New("sandbox has been successfully saved") + errAutoSaved = errors.New("sandbox has been successfully auto-saved") +) + +// SaveStatus returns the sandbox save status. If it was saved successfully, +// autosaved indicates whether save was triggered by autosave. If it was not +// saved successfully, err indicates the sandbox error that caused the kernel to +// exit during save. +func (k *Kernel) SaveStatus() (saved, autosaved bool, err error) { + k.extMu.Lock() + defer k.extMu.Unlock() + switch k.saveStatus { + case nil: + return false, false, nil + case errSaved: + return true, false, nil + case errAutoSaved: + return true, true, nil + default: + return false, false, k.saveStatus + } +} + +// SetSaveSuccess sets the flag indicating that save completed successfully, if +// no status was already set. +func (k *Kernel) SetSaveSuccess(autosave bool) { k.extMu.Lock() defer k.extMu.Unlock() - return k.saveErr + if k.saveStatus == nil { + if autosave { + k.saveStatus = errAutoSaved + } else { + k.saveStatus = errSaved + } + } } // SetSaveError sets the sandbox error that caused the kernel to exit during @@ -1494,8 +1526,8 @@ func (k *Kernel) SaveError() error { func (k *Kernel) SetSaveError(err error) { k.extMu.Lock() defer k.extMu.Unlock() - if k.saveErr == nil { - k.saveErr = err + if k.saveStatus == nil { + k.saveStatus = err } } diff --git a/pkg/sentry/kernel/shm/shm_refs.go b/pkg/sentry/kernel/shm/shm_refs.go index f550c7ca1..e1c9167ad 100644 --- a/pkg/sentry/kernel/shm/shm_refs.go +++ b/pkg/sentry/kernel/shm/shm_refs.go @@ -11,7 +11,7 @@ import ( // stack traces). This is false by default and should only be set to true for // debugging purposes, as it can generate an extremely large amount of output // and drastically degrade performance. -const ShmenableLogging = false +const ShmenableLogging = true // obj is used to customize logging. Note that we use a pointer to T so that // we do not copy the entire object when passed as a format parameter. |