diff options
Diffstat (limited to 'libpod')
| -rw-r--r-- | libpod/container_config.go | 6 | ||||
| -rw-r--r-- | libpod/options.go | 20 | ||||
| -rw-r--r-- | libpod/pod.go | 11 | ||||
| -rw-r--r-- | libpod/runtime_pod_infra_linux.go | 6 |
4 files changed, 41 insertions, 2 deletions
diff --git a/libpod/container_config.go b/libpod/container_config.go index 5f89395c1..3fc058d52 100644 --- a/libpod/container_config.go +++ b/libpod/container_config.go @@ -310,7 +310,11 @@ type ContainerMiscConfig struct { // OCIRuntime used to create the container OCIRuntime string `json:"runtime,omitempty"` // ExitCommand is the container's exit command. - // This Command will be executed when the container exits + // This Command will be executed when the container exits by Conmon. + // It is usually used to invoke post-run cleanup - for example, in + // Podman, it invokes `podman container cleanup`, which in turn calls + // Libpod's Cleanup() API to unmount the container and clean up its + // network. ExitCommand []string `json:"exitCommand,omitempty"` // IsInfra is a bool indicating whether this container is an infra container used for // sharing kernel namespaces in a pod diff --git a/libpod/options.go b/libpod/options.go index 16b05d9b6..dccbb8741 100644 --- a/libpod/options.go +++ b/libpod/options.go @@ -2130,3 +2130,23 @@ func WithPodHostNetwork() PodCreateOption { return nil } } + +// WithPodInfraExitCommand sets an exit command for the pod's infra container. +// Semantics are identical to WithExitCommand() above - the ID of the container +// will be appended to the end of the provided command (note that this will +// specifically be the ID of the infra container *and not the pod's id*. +func WithPodInfraExitCommand(exitCmd []string) PodCreateOption { + return func(pod *Pod) error { + if pod.valid { + return define.ErrPodFinalized + } + + if !pod.config.InfraContainer.HasInfraContainer { + return errors.Wrapf(define.ErrInvalidArg, "cannot configure pod infra container exit command as no infra container is being created") + } + + pod.config.InfraContainer.ExitCommand = exitCmd + + return nil + } +} diff --git a/libpod/pod.go b/libpod/pod.go index 76d50db4e..422966b94 100644 --- a/libpod/pod.go +++ b/libpod/pod.go @@ -81,7 +81,15 @@ type podState struct { InfraContainerID string } -// InfraContainerConfig is the configuration for the pod's infra container +// InfraContainerConfig is the configuration for the pod's infra container. +// Generally speaking, these are equivalent to container configuration options +// you will find in container_config.go (and even named identically), save for +// HasInfraContainer (which determines if an infra container is even created - +// if it is false, no other options in this struct will be used) and HostNetwork +// (this involves the created OCI spec, and as such is not represented directly +// in container_config.go). +// Generally speaking, aside from those two exceptions, these options will set +// the equivalent field in the container's configuration. type InfraContainerConfig struct { ConmonPidFile string `json:"conmonPidFile"` HasInfraContainer bool `json:"makeInfraContainer"` @@ -96,6 +104,7 @@ type InfraContainerConfig struct { UseImageHosts bool `json:"useImageHosts,omitempty"` HostAdd []string `json:"hostsAdd,omitempty"` Networks []string `json:"networks,omitempty"` + ExitCommand []string `json:"exitCommand,omitempty"` } // ID retrieves the pod's ID diff --git a/libpod/runtime_pod_infra_linux.go b/libpod/runtime_pod_infra_linux.go index 4d149a6eb..b2f21d946 100644 --- a/libpod/runtime_pod_infra_linux.go +++ b/libpod/runtime_pod_infra_linux.go @@ -83,6 +83,9 @@ func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, rawIm return nil, errors.Wrapf(err, "error removing network namespace from pod %s infra container", p.ID()) } + // For each option in InfraContainerConfig - if set, pass into + // the infra container we're creating with the appropriate + // With... option. if p.config.InfraContainer.StaticIP != nil { options = append(options, WithStaticIP(p.config.InfraContainer.StaticIP)) } @@ -107,6 +110,9 @@ func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, rawIm if len(p.config.InfraContainer.HostAdd) > 0 { options = append(options, WithHosts(p.config.InfraContainer.HostAdd)) } + if len(p.config.InfraContainer.ExitCommand) > 0 { + options = append(options, WithExitCommand(p.config.InfraContainer.ExitCommand)) + } } g.SetRootReadonly(true) |