specgen/generate: Add support for FreeBSD

[NO NEW TESTS NEEDED]

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

1 files changed, 51 insertions, 0 deletions

diff --git a/pkg/specgen/generate/namespaces_freebsd.go b/pkg/specgen/generate/namespaces_freebsd.go
new file mode 100644
index 000000000..d821d9daa
--- /dev/null
+++ b/pkg/specgen/generate/namespaces_freebsd.go
@@ -0,0 +1,51 @@
+package generate
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/containers/podman/v4/libpod"
+	"github.com/containers/podman/v4/pkg/specgen"
+	"github.com/opencontainers/runtime-tools/generate"
+	"github.com/sirupsen/logrus"
+)
+
+func specConfigureNamespaces(s *specgen.SpecGenerator, g *generate.Generator, rt *libpod.Runtime, pod *libpod.Pod) error {
+	// UTS
+
+	hostname := s.Hostname
+	if hostname == "" {
+		switch {
+		case s.UtsNS.NSMode == specgen.FromPod:
+			hostname = pod.Hostname()
+		case s.UtsNS.NSMode == specgen.FromContainer:
+			utsCtr, err := rt.LookupContainer(s.UtsNS.Value)
+			if err != nil {
+				return fmt.Errorf("error looking up container to share uts namespace with: %w", err)
+			}
+			hostname = utsCtr.Hostname()
+		case (s.NetNS.NSMode == specgen.Host && hostname == "") || s.UtsNS.NSMode == specgen.Host:
+			tmpHostname, err := os.Hostname()
+			if err != nil {
+				return fmt.Errorf("unable to retrieve hostname of the host: %w", err)
+			}
+			hostname = tmpHostname
+		default:
+			logrus.Debug("No hostname set; container's hostname will default to runtime default")
+		}
+	}
+
+	g.RemoveHostname()
+	if s.Hostname != "" || s.UtsNS.NSMode != specgen.Host {
+		// Set the hostname in the OCI configuration only if specified by
+		// the user or if we are creating a new UTS namespace.
+		// TODO: Should we be doing this for pod or container shared
+		// namespaces?
+		g.SetHostname(hostname)
+	}
+	if _, ok := s.Env["HOSTNAME"]; !ok && s.Hostname != "" {
+		g.AddProcessEnv("HOSTNAME", hostname)
+	}
+
+	return nil
+}