podmanv2 cp

enable podman to copy files between container and host, local mode only. this is a straight port of v1 code to v2.

Signed-off-by: Brent Baude <bbaude@redhat.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/cmd/podman/containers/cp.go b/cmd/podman/containers/cp.go
new file mode 100644
index 000000000..f0f9a158d
--- /dev/null
+++ b/cmd/podman/containers/cp.go
@@ -0,0 +1,55 @@
+package containers
+
+import (
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/cgroups"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/containers/libpod/pkg/rootless"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var (
+	cpDescription = `Command copies the contents of SRC_PATH to the DEST_PATH.
+
+  You can copy from the container's file system to the local machine or the reverse, from the local filesystem to the container. If "-" is specified for either the SRC_PATH or DEST_PATH, you can also stream a tar archive from STDIN or to STDOUT. The CONTAINER can be a running or stopped container.  The SRC_PATH or DEST_PATH can be a file or directory.
+`
+	cpCommand = &cobra.Command{
+		Use:     "cp [flags] SRC_PATH DEST_PATH",
+		Short:   "Copy files/folders between a container and the local filesystem",
+		Long:    cpDescription,
+		Args:    cobra.ExactArgs(2),
+		RunE:    cp,
+		Example: "podman cp [CONTAINER:]SRC_PATH [CONTAINER:]DEST_PATH",
+	}
+)
+
+var (
+	cpOpts entities.ContainerCpOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode},
+		Command: cpCommand,
+	})
+	flags := cpCommand.Flags()
+	flags.BoolVar(&cpOpts.Extract, "extract", false, "Extract the tar file into the destination directory.")
+	flags.BoolVar(&cpOpts.Pause, "pause", copyPause(), "Pause the container while copying")
+}
+
+func cp(cmd *cobra.Command, args []string) error {
+	_, err := registry.ContainerEngine().ContainerCp(registry.GetContext(), args[0], args[1], cpOpts)
+	return err
+}
+
+func copyPause() bool {
+	if rootless.IsRootless() {
+		cgroupv2, _ := cgroups.IsCgroup2UnifiedMode()
+		if !cgroupv2 {
+			logrus.Debugf("defaulting to pause==false on rootless cp in cgroupv1 systems")
+			return false
+		}
+	}
+	return true
+}