Getting ctr closer to compiling on Windows

Signed-off-by: John Howard <jhoward@microsoft.com>

runtime/container.go

@@ -5,9 +5,9 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
-	"syscall"
 
 	"github.com/Sirupsen/logrus"
+	"github.com/docker/containerd/specs"
 )
 
 type Container interface {
@@ -18,7 +18,7 @@ type Container interface {
 	// Start starts the init process of the container
 	Start(checkpoint string, s Stdio) (Process, error)
 	// Exec starts another process in an existing container
-	Exec(string, ProcessSpec, Stdio) (Process, error)
+	Exec(string, specs.ProcessSpec, Stdio) (Process, error)
 	// Delete removes the container's state and any resources
 	Delete() error
 	// Processes returns all the containers processes that have been added
@@ -175,8 +175,8 @@ func (c *container) Labels() []string {
 	return c.labels
 }
 
-func (c *container) readSpec() (*PlatformSpec, error) {
-	var spec PlatformSpec
+func (c *container) readSpec() (*specs.PlatformSpec, error) {
+	var spec specs.PlatformSpec
 	f, err := os.Open(filepath.Join(c.bundle, "config.json"))
 	if err != nil {
 		return nil, err
@@ -188,18 +188,6 @@ func (c *container) readSpec() (*PlatformSpec, error) {
 	return &spec, nil
 }
 
-func (c *container) State() State {
-	proc := c.processes["init"]
-	if proc == nil || proc.pid == 0 {
-		return Stopped
-	}
-	err := syscall.Kill(proc.pid, 0)
-	if err != nil && err == syscall.ESRCH {
-		return Stopped
-	}
-	return Running
-}
-
 func (c *container) Delete() error {
 	return os.RemoveAll(filepath.Join(c.root, c.id))
 }

runtime/container_linux.go

@@ -9,17 +9,18 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/docker/containerd/specs"
 	"github.com/opencontainers/runc/libcontainer"
-	"github.com/opencontainers/specs"
+	ocs "github.com/opencontainers/specs"
 )
 
-func getRootIDs(s *PlatformSpec) (int, int, error) {
+func getRootIDs(s *specs.PlatformSpec) (int, int, error) {
 	if s == nil {
 		return 0, 0, nil
 	}
 	var hasUserns bool
 	for _, ns := range s.Linux.Namespaces {
-		if ns.Type == specs.UserNamespace {
+		if ns.Type == ocs.UserNamespace {
 			hasUserns = true
 			break
 		}
@@ -32,6 +33,18 @@ func getRootIDs(s *PlatformSpec) (int, int, error) {
 	return uid, gid, nil
 }
 
+func (c *container) State() State {
+	proc := c.processes["init"]
+	if proc == nil || proc.pid == 0 {
+		return Stopped
+	}
+	err := syscall.Kill(proc.pid, 0)
+	if err != nil && err == syscall.ESRCH {
+		return Stopped
+	}
+	return Running
+}
+
 func (c *container) Runtime() string {
 	return c.runtime
 }
@@ -136,7 +149,7 @@ func (c *container) Start(checkpoint string, s Stdio) (Process, error) {
 		c:           c,
 		stdio:       s,
 		spec:        spec,
-		processSpec: ProcessSpec(spec.Process),
+		processSpec: specs.ProcessSpec(spec.Process),
 	}
 	p, err := newProcess(config)
 	if err != nil {
@@ -152,7 +165,7 @@ func (c *container) Start(checkpoint string, s Stdio) (Process, error) {
 	return p, nil
 }
 
-func (c *container) Exec(pid string, spec ProcessSpec, s Stdio) (Process, error) {
+func (c *container) Exec(pid string, spec specs.ProcessSpec, s Stdio) (Process, error) {
 	processRoot := filepath.Join(c.root, c.id, pid)
 	if err := os.Mkdir(processRoot, 0755); err != nil {
 		return nil, err
@@ -187,14 +200,14 @@ func (c *container) Exec(pid string, spec ProcessSpec, s Stdio) (Process, error)
 }
 
 func (c *container) getLibctContainer() (libcontainer.Container, error) {
-	f, err := libcontainer.New(specs.LinuxStateDirectory, libcontainer.Cgroupfs)
+	f, err := libcontainer.New(ocs.LinuxStateDirectory, libcontainer.Cgroupfs)
 	if err != nil {
 		return nil, err
 	}
 	return f.Load(c.id)
 }
 
-func hostIDFromMap(id uint32, mp []specs.IDMapping) int {
+func hostIDFromMap(id uint32, mp []ocs.IDMapping) int {
 	for _, m := range mp {
 		if (id >= m.ContainerID) && (id <= (m.ContainerID + m.Size - 1)) {
 			return int(m.HostID + (id - m.ContainerID))

runtime/container_windows.go

@@ -1,11 +1,20 @@
 package runtime
 
-import "errors"
+import (
+	"errors"
 
-func getRootIDs(s *PlatformSpec) (int, int, error) {
+	"github.com/docker/containerd/specs"
+)
+
+func getRootIDs(s *specs.PlatformSpec) (int, int, error) {
 	return 0, 0, nil
 }
 
+// TODO Windows: This will have a different implementation
+func (c *container) State() State {
+	return Running // HACK HACK HACK
+}
+
 func (c *container) Runtime() string {
 	return "windows"
 }
@@ -38,7 +47,7 @@ func (c *container) Start(checkpoint string, s Stdio) (Process, error) {
 
 // TODO Windows: Implement me.
 // This will have a very different implementation on Windows.
-func (c *container) Exec(pid string, spec ProcessSpec, s Stdio) (Process, error) {
+func (c *container) Exec(pid string, spec specs.ProcessSpec, s Stdio) (Process, error) {
 	return nil, errors.New("Exec not yet implemented on Windows")
 }
 

runtime/process.go

@@ -8,6 +8,8 @@ import (
 	"os"
 	"path/filepath"
 	"strconv"
+
+	"github.com/docker/containerd/specs"
 )
 
 type Process interface {
@@ -25,7 +27,7 @@ type Process interface {
 	// has not exited
 	ExitStatus() (int, error)
 	// Spec returns the process spec that created the process
-	Spec() ProcessSpec
+	Spec() specs.ProcessSpec
 	// Signal sends the provided signal to the process
 	Signal(os.Signal) error
 	// Container returns the container that the process belongs to
@@ -39,8 +41,8 @@ type Process interface {
 type processConfig struct {
 	id          string
 	root        string
-	processSpec ProcessSpec
-	spec        *PlatformSpec
+	processSpec specs.ProcessSpec
+	spec        *specs.PlatformSpec
 	c           *container
 	stdio       Stdio
 	exec        bool
@@ -118,7 +120,7 @@ type process struct {
 	exitPipe    *os.File
 	controlPipe *os.File
 	container   *container
-	spec        ProcessSpec
+	spec        specs.ProcessSpec
 	stdio       Stdio
 }
 
@@ -163,7 +165,7 @@ func (p *process) ExitStatus() (int, error) {
 	return strconv.Atoi(string(data))
 }
 
-func (p *process) Spec() ProcessSpec {
+func (p *process) Spec() specs.ProcessSpec {
 	return p.spec
 }
 

runtime/runtime.go

@@ -3,6 +3,8 @@ package runtime
 import (
 	"errors"
 	"time"
+
+	"github.com/docker/containerd/specs"
 )
 
 var (
@@ -46,7 +48,7 @@ type state struct {
 }
 
 type ProcessState struct {
-	ProcessSpec
+	specs.ProcessSpec
 	Exec   bool   `json:"exec"`
 	Stdin  string `json:"containerdStdin"`
 	Stdout string `json:"containerdStdout"`

runtime/spec_linux.go

@@ -1,8 +0,0 @@
-package runtime
-
-import "github.com/opencontainers/specs"
-
-type (
-	PlatformSpec specs.LinuxSpec
-	ProcessSpec  specs.Process
-)

runtime/spec_windows.go

@@ -1,8 +0,0 @@
-package runtime
-
-// Temporary Windows version of the spec in lieu of opencontainers/specs having
-// Windows support currently.
-import "github.com/docker/containerd/specs"
-
-type PlatformSpec specs.WindowsSpec
-type ProcessSpec specs.Process