diff options
| -rw-r--r-- | pkg/specgen/generate/namespaces.go | 149 | ||||
| -rw-r--r-- | pkg/specgen/generate/namespaces_linux.go | 160 | ||||
| -rw-r--r-- | pkg/specgen/generate/namespaces_unsupported.go | 16 |
3 files changed, 176 insertions, 149 deletions
diff --git a/pkg/specgen/generate/namespaces.go b/pkg/specgen/generate/namespaces.go index f0d4e9153..aee4db0e6 100644 --- a/pkg/specgen/generate/namespaces.go +++ b/pkg/specgen/generate/namespaces.go @@ -3,7 +3,6 @@ package generate import ( "errors" "fmt" - "os" "strings" "github.com/containers/common/libimage" @@ -15,7 +14,6 @@ import ( "github.com/containers/podman/v4/pkg/specgen" "github.com/containers/podman/v4/pkg/util" spec "github.com/opencontainers/runtime-spec/specs-go" - "github.com/opencontainers/runtime-tools/generate" "github.com/sirupsen/logrus" ) @@ -357,153 +355,6 @@ func namespaceOptions(s *specgen.SpecGenerator, rt *libpod.Runtime, pod *libpod. return toReturn, nil } -func specConfigureNamespaces(s *specgen.SpecGenerator, g *generate.Generator, rt *libpod.Runtime, pod *libpod.Pod) error { - // PID - switch s.PidNS.NSMode { - case specgen.Path: - if _, err := os.Stat(s.PidNS.Value); err != nil { - return fmt.Errorf("cannot find specified PID namespace path: %w", err) - } - if err := g.AddOrReplaceLinuxNamespace(string(spec.PIDNamespace), s.PidNS.Value); err != nil { - return err - } - case specgen.Host: - if err := g.RemoveLinuxNamespace(string(spec.PIDNamespace)); err != nil { - return err - } - case specgen.Private: - if err := g.AddOrReplaceLinuxNamespace(string(spec.PIDNamespace), ""); err != nil { - return err - } - } - - // IPC - switch s.IpcNS.NSMode { - case specgen.Path: - if _, err := os.Stat(s.IpcNS.Value); err != nil { - return fmt.Errorf("cannot find specified IPC namespace path: %w", err) - } - if err := g.AddOrReplaceLinuxNamespace(string(spec.IPCNamespace), s.IpcNS.Value); err != nil { - return err - } - case specgen.Host: - if err := g.RemoveLinuxNamespace(string(spec.IPCNamespace)); err != nil { - return err - } - case specgen.Private: - if err := g.AddOrReplaceLinuxNamespace(string(spec.IPCNamespace), ""); err != nil { - return err - } - } - - // UTS - switch s.UtsNS.NSMode { - case specgen.Path: - if _, err := os.Stat(s.UtsNS.Value); err != nil { - return fmt.Errorf("cannot find specified UTS namespace path: %w", err) - } - if err := g.AddOrReplaceLinuxNamespace(string(spec.UTSNamespace), s.UtsNS.Value); err != nil { - return err - } - case specgen.Host: - if err := g.RemoveLinuxNamespace(string(spec.UTSNamespace)); err != nil { - return err - } - case specgen.Private: - if err := g.AddOrReplaceLinuxNamespace(string(spec.UTSNamespace), ""); err != nil { - return err - } - } - - 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) - } - - // User - if _, err := specgen.SetupUserNS(s.IDMappings, s.UserNS, g); err != nil { - return err - } - - // Cgroup - switch s.CgroupNS.NSMode { - case specgen.Path: - if _, err := os.Stat(s.CgroupNS.Value); err != nil { - return fmt.Errorf("cannot find specified cgroup namespace path: %w", err) - } - if err := g.AddOrReplaceLinuxNamespace(string(spec.CgroupNamespace), s.CgroupNS.Value); err != nil { - return err - } - case specgen.Host: - if err := g.RemoveLinuxNamespace(string(spec.CgroupNamespace)); err != nil { - return err - } - case specgen.Private: - if err := g.AddOrReplaceLinuxNamespace(string(spec.CgroupNamespace), ""); err != nil { - return err - } - } - - // Net - switch s.NetNS.NSMode { - case specgen.Path: - if _, err := os.Stat(s.NetNS.Value); err != nil { - return fmt.Errorf("cannot find specified network namespace path: %w", err) - } - if err := g.AddOrReplaceLinuxNamespace(string(spec.NetworkNamespace), s.NetNS.Value); err != nil { - return err - } - case specgen.Host: - if err := g.RemoveLinuxNamespace(string(spec.NetworkNamespace)); err != nil { - return err - } - case specgen.Private, specgen.NoNetwork: - if err := g.AddOrReplaceLinuxNamespace(string(spec.NetworkNamespace), ""); err != nil { - return err - } - } - - if g.Config.Annotations == nil { - g.Config.Annotations = make(map[string]string) - } - if s.PublishExposedPorts { - g.Config.Annotations[define.InspectAnnotationPublishAll] = define.InspectResponseTrue - } else { - g.Config.Annotations[define.InspectAnnotationPublishAll] = define.InspectResponseFalse - } - - return nil -} - // GetNamespaceOptions transforms a slice of kernel namespaces // into a slice of pod create options. Currently, not all // kernel namespaces are supported, and they will be returned in an error diff --git a/pkg/specgen/generate/namespaces_linux.go b/pkg/specgen/generate/namespaces_linux.go new file mode 100644 index 000000000..5c056e52c --- /dev/null +++ b/pkg/specgen/generate/namespaces_linux.go @@ -0,0 +1,160 @@ +package generate + +import ( + "fmt" + "os" + + "github.com/containers/podman/v4/libpod" + "github.com/containers/podman/v4/libpod/define" + "github.com/containers/podman/v4/pkg/specgen" + spec "github.com/opencontainers/runtime-spec/specs-go" + "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 { + // PID + switch s.PidNS.NSMode { + case specgen.Path: + if _, err := os.Stat(s.PidNS.Value); err != nil { + return fmt.Errorf("cannot find specified PID namespace path: %w", err) + } + if err := g.AddOrReplaceLinuxNamespace(string(spec.PIDNamespace), s.PidNS.Value); err != nil { + return err + } + case specgen.Host: + if err := g.RemoveLinuxNamespace(string(spec.PIDNamespace)); err != nil { + return err + } + case specgen.Private: + if err := g.AddOrReplaceLinuxNamespace(string(spec.PIDNamespace), ""); err != nil { + return err + } + } + + // IPC + switch s.IpcNS.NSMode { + case specgen.Path: + if _, err := os.Stat(s.IpcNS.Value); err != nil { + return fmt.Errorf("cannot find specified IPC namespace path: %w", err) + } + if err := g.AddOrReplaceLinuxNamespace(string(spec.IPCNamespace), s.IpcNS.Value); err != nil { + return err + } + case specgen.Host: + if err := g.RemoveLinuxNamespace(string(spec.IPCNamespace)); err != nil { + return err + } + case specgen.Private: + if err := g.AddOrReplaceLinuxNamespace(string(spec.IPCNamespace), ""); err != nil { + return err + } + } + + // UTS + switch s.UtsNS.NSMode { + case specgen.Path: + if _, err := os.Stat(s.UtsNS.Value); err != nil { + return fmt.Errorf("cannot find specified UTS namespace path: %w", err) + } + if err := g.AddOrReplaceLinuxNamespace(string(spec.UTSNamespace), s.UtsNS.Value); err != nil { + return err + } + case specgen.Host: + if err := g.RemoveLinuxNamespace(string(spec.UTSNamespace)); err != nil { + return err + } + case specgen.Private: + if err := g.AddOrReplaceLinuxNamespace(string(spec.UTSNamespace), ""); err != nil { + return err + } + } + + 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) + } + + // User + if _, err := specgen.SetupUserNS(s.IDMappings, s.UserNS, g); err != nil { + return err + } + + // Cgroup + switch s.CgroupNS.NSMode { + case specgen.Path: + if _, err := os.Stat(s.CgroupNS.Value); err != nil { + return fmt.Errorf("cannot find specified cgroup namespace path: %w", err) + } + if err := g.AddOrReplaceLinuxNamespace(string(spec.CgroupNamespace), s.CgroupNS.Value); err != nil { + return err + } + case specgen.Host: + if err := g.RemoveLinuxNamespace(string(spec.CgroupNamespace)); err != nil { + return err + } + case specgen.Private: + if err := g.AddOrReplaceLinuxNamespace(string(spec.CgroupNamespace), ""); err != nil { + return err + } + } + + // Net + switch s.NetNS.NSMode { + case specgen.Path: + if _, err := os.Stat(s.NetNS.Value); err != nil { + return fmt.Errorf("cannot find specified network namespace path: %w", err) + } + if err := g.AddOrReplaceLinuxNamespace(string(spec.NetworkNamespace), s.NetNS.Value); err != nil { + return err + } + case specgen.Host: + if err := g.RemoveLinuxNamespace(string(spec.NetworkNamespace)); err != nil { + return err + } + case specgen.Private, specgen.NoNetwork: + if err := g.AddOrReplaceLinuxNamespace(string(spec.NetworkNamespace), ""); err != nil { + return err + } + } + + if g.Config.Annotations == nil { + g.Config.Annotations = make(map[string]string) + } + if s.PublishExposedPorts { + g.Config.Annotations[define.InspectAnnotationPublishAll] = define.InspectResponseTrue + } else { + g.Config.Annotations[define.InspectAnnotationPublishAll] = define.InspectResponseFalse + } + + return nil +} diff --git a/pkg/specgen/generate/namespaces_unsupported.go b/pkg/specgen/generate/namespaces_unsupported.go new file mode 100644 index 000000000..be5805ad6 --- /dev/null +++ b/pkg/specgen/generate/namespaces_unsupported.go @@ -0,0 +1,16 @@ +//go:build !linux +// +build !linux + +package generate + +import ( + "errors" + + "github.com/containers/podman/v4/libpod" + "github.com/containers/podman/v4/pkg/specgen" + "github.com/opencontainers/runtime-tools/generate" +) + +func specConfigureNamespaces(s *specgen.SpecGenerator, g *generate.Generator, rt *libpod.Runtime, pod *libpod.Pod) error { + return errors.New("unsupported specConfigureNamespaces") +} |