From dff224a2052b2d7790fd5bba8dff84c79969cf65 Mon Sep 17 00:00:00 2001 From: Peter Hunt Date: Fri, 8 Mar 2019 12:00:59 -0500 Subject: Default to image entrypoint for infra container If the pod infra container is overriden, we want to run the entry point of the image, instead of the default infra command. This allows users to override the infra-image with greater ease. Also use process environment variables from image Signed-off-by: Peter Hunt --- libpod/runtime_pod_infra_linux.go | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) (limited to 'libpod') diff --git a/libpod/runtime_pod_infra_linux.go b/libpod/runtime_pod_infra_linux.go index 4f221764a..81579db4b 100644 --- a/libpod/runtime_pod_infra_linux.go +++ b/libpod/runtime_pod_infra_linux.go @@ -4,11 +4,14 @@ package libpod import ( "context" + "strings" "github.com/containers/libpod/libpod/image" "github.com/containers/libpod/pkg/rootless" + "github.com/opencontainers/image-spec/specs-go/v1" spec "github.com/opencontainers/runtime-spec/specs-go" "github.com/opencontainers/runtime-tools/generate" + "github.com/pkg/errors" ) const ( @@ -17,7 +20,7 @@ const ( IDTruncLength = 12 ) -func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, imgID string) (*Container, error) { +func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, imgID string, config *v1.ImageConfig) (*Container, error) { // Set up generator for infra container defaults g, err := generate.New("linux") @@ -27,8 +30,23 @@ func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, imgID isRootless := rootless.IsRootless() + entryCmd := []string{r.config.InfraCommand} + // default to entrypoint in image if there is one + if len(config.Entrypoint) > 0 { + entryCmd = config.Entrypoint + } + if len(config.Env) > 0 { + for _, nameValPair := range config.Env { + nameValSlice := strings.Split(nameValPair, "=") + if len(nameValSlice) < 2 { + return nil, errors.Errorf("Invalid environment variable structure in pause image") + } + g.AddProcessEnv(nameValSlice[0], nameValSlice[1]) + } + } + g.SetRootReadonly(true) - g.SetProcessArgs([]string{r.config.InfraCommand}) + g.SetProcessArgs(entryCmd) if isRootless { g.RemoveMount("/dev/pts") @@ -79,5 +97,5 @@ func (r *Runtime) createInfraContainer(ctx context.Context, p *Pod) (*Container, imageName := newImage.Names()[0] imageID := data.ID - return r.makeInfraContainer(ctx, p, imageName, imageID) + return r.makeInfraContainer(ctx, p, imageName, imageID, newImage.Config) } -- cgit v1.2.3-54-g00ecf