libpod: Implement 'podman cp' for FreeBSD

[NO NEW TESTS NEEDED]

Signed-off-by: Doug Rabson <dfr@rabson.org>

libpod/container_copy_common.go

@@ -1,5 +1,5 @@
-//go:build linux
+//go:build linux || freebsd
-// +build linux
+// +build linux freebsd
 
 package libpod
 

libpod/container_copy_freebsd.go

@@ -0,0 +1,13 @@
+package libpod
+
+// On FreeBSD, the container's mounts are in the global mount
+// namespace so we can just execute the function directly.
+func (c *Container) joinMountAndExec(f func() error) error {
+	return f()
+}
+
+// Similarly, we can just use resolvePath for both running and stopped
+// containers.
+func (c *Container) resolveCopyTarget(mountPoint string, containerPath string) (string, string, error) {
+	return c.resolvePath(mountPoint, containerPath)
+}

libpod/container_copy_unsupported.go

@@ -1,5 +1,5 @@
-//go:build !linux
+//go:build !linux && !freebsd
-// +build !linux
+// +build !linux,!freebsd
 
 package libpod
 

libpod/container_stat_common.go

@@ -1,5 +1,5 @@
-//go:build linux
+//go:build linux || freebsd
-// +build linux
+// +build linux freebsd
 
 package libpod
 

libpod/container_stat_freebsd.go

@@ -0,0 +1,13 @@
+package libpod
+
+import (
+	"github.com/containers/buildah/copier"
+)
+
+// On FreeBSD, jails use the global mount namespace, filtered to only
+// the mounts the jail should see. This means that we can use
+// statOnHost whether the container is running or not.
+// container is running
+func (c *Container) statInContainer(mountPoint string, containerPath string) (*copier.StatForItem, string, string, error) {
+	return c.statOnHost(mountPoint, containerPath)
+}

libpod/container_stat_unsupported.go

@@ -1,5 +1,5 @@
-//go:build !linux
+//go:build !linux && !freebsd
-// +build !linux
+// +build !linux,!freebsd
 
 package libpod