Windows: Initial compilation enablement

Signed-off-by: John Howard <[email protected]>

Author: John Howard

Diff for: apparmor/gen.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package apparmor
 
 import (

Diff for: apparmor/setup.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package apparmor
 
 import (

Diff for: cgroups/cgroups.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package cgroups
 
 import (

Diff for: cgroups/cgroups_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package cgroups
 
 import (

Diff for: cgroups/cgroups_unsupported.go

@@ -0,0 +1,3 @@
+// +build !linux
+
+package cgroups

Diff for: cgroups/fs/apply_raw.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/blkio.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/blkio_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/cpu.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/cpu_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/cpuacct.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/cpuset.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/cpuset_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/devices.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/devices_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/freezer.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/fs_unsupported.go

@@ -0,0 +1,3 @@
+// +build !linux
+
+package fs

Diff for: cgroups/fs/hugetlb.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/memory.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/memory_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/perf_event.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/stats_util_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/util_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 /*
 Utility for testing cgroup operations.
 

Diff for: cgroups/fs/utils.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/fs/utils_test.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package fs
 
 import (

Diff for: cgroups/stats.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package cgroups
 
 type ThrottlingData struct {

Diff for: cgroups/utils.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package cgroups
 
 import (

Diff for: configs/cgroup.go

@@ -8,6 +8,9 @@ const (
 	Thawed    FreezerState = "THAWED"
 )
 
+// TODO Windows: This can be factored out in the future as Cgroups are not
+// supported on the Windows platform.
+
 type Cgroup struct {
 	Name string `json:"name"`
 

Diff for: configs/config.go

@@ -1,7 +1,5 @@
 package configs
 
-import "fmt"
-
 type Rlimit struct {
 	Type int    `json:"type"`
 	Hard uint64 `json:"hard"`
@@ -15,6 +13,9 @@ type IDMap struct {
 	Size        int `json:"size"`
 }
 
+// TODO Windows. Many of these fields should be factored out into those parts
+// which are common across platforms, and those which are platform specific.
+
 // Config defines configuration options for executing a process inside a contained environment.
 type Config struct {
 	// NoPivotRoot will use MS_MOVE and a chroot to jail the process into the container's rootfs
@@ -104,49 +105,3 @@ type Config struct {
 	// sysctl -w my.property.name value in Linux.
 	SystemProperties map[string]string `json:"system_properties"`
 }
-
-// Gets the root uid for the process on host which could be non-zero
-// when user namespaces are enabled.
-func (c Config) HostUID() (int, error) {
-	if c.Namespaces.Contains(NEWUSER) {
-		if c.UidMappings == nil {
-			return -1, fmt.Errorf("User namespaces enabled, but no user mappings found.")
-		}
-		id, found := c.hostIDFromMapping(0, c.UidMappings)
-		if !found {
-			return -1, fmt.Errorf("User namespaces enabled, but no root user mapping found.")
-		}
-		return id, nil
-	}
-	// Return default root uid 0
-	return 0, nil
-}
-
-// Gets the root uid for the process on host which could be non-zero
-// when user namespaces are enabled.
-func (c Config) HostGID() (int, error) {
-	if c.Namespaces.Contains(NEWUSER) {
-		if c.GidMappings == nil {
-			return -1, fmt.Errorf("User namespaces enabled, but no gid mappings found.")
-		}
-		id, found := c.hostIDFromMapping(0, c.GidMappings)
-		if !found {
-			return -1, fmt.Errorf("User namespaces enabled, but no root user mapping found.")
-		}
-		return id, nil
-	}
-	// Return default root uid 0
-	return 0, nil
-}
-
-// Utility function that gets a host ID for a container ID from user namespace map
-// if that ID is present in the map.
-func (c Config) hostIDFromMapping(containerID int, uMap []IDMap) (int, bool) {
-	for _, m := range uMap {
-		if (containerID >= m.ContainerID) && (containerID <= (m.ContainerID + m.Size - 1)) {
-			hostID := m.HostID + (containerID - m.ContainerID)
-			return hostID, true
-		}
-	}
-	return -1, false
-}

Diff for: configs/config_linux.go

@@ -0,0 +1,49 @@
+package configs
+
+import "fmt"
+
+// Gets the root uid for the process on host which could be non-zero
+// when user namespaces are enabled.
+func (c Config) HostUID() (int, error) {
+	if c.Namespaces.Contains(NEWUSER) {
+		if c.UidMappings == nil {
+			return -1, fmt.Errorf("User namespaces enabled, but no user mappings found.")
+		}
+		id, found := c.hostIDFromMapping(0, c.UidMappings)
+		if !found {
+			return -1, fmt.Errorf("User namespaces enabled, but no root user mapping found.")
+		}
+		return id, nil
+	}
+	// Return default root uid 0
+	return 0, nil
+}
+
+// Gets the root uid for the process on host which could be non-zero
+// when user namespaces are enabled.
+func (c Config) HostGID() (int, error) {
+	if c.Namespaces.Contains(NEWUSER) {
+		if c.GidMappings == nil {
+			return -1, fmt.Errorf("User namespaces enabled, but no gid mappings found.")
+		}
+		id, found := c.hostIDFromMapping(0, c.GidMappings)
+		if !found {
+			return -1, fmt.Errorf("User namespaces enabled, but no root user mapping found.")
+		}
+		return id, nil
+	}
+	// Return default root uid 0
+	return 0, nil
+}
+
+// Utility function that gets a host ID for a container ID from user namespace map
+// if that ID is present in the map.
+func (c Config) hostIDFromMapping(containerID int, uMap []IDMap) (int, bool) {
+	for _, m := range uMap {
+		if (containerID >= m.ContainerID) && (containerID <= (m.ContainerID + m.Size - 1)) {
+			hostID := m.HostID + (containerID - m.ContainerID)
+			return hostID, true
+		}
+	}
+	return -1, false
+}

Diff for: configs/device.go

@@ -9,6 +9,8 @@ const (
 	Wildcard = -1
 )
 
+// TODO Windows: This can be factored out in the future
+
 type Device struct {
 	// Device type, block, char, etc.
 	Type rune `json:"type"`

Diff for: configs/device_defaults.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package configs
 
 var (

Diff for: configs/namespaces.go

@@ -1,91 +1,5 @@
 package configs
 
-import "fmt"
-
 type NamespaceType string
 
-const (
-	NEWNET  NamespaceType = "NEWNET"
-	NEWPID  NamespaceType = "NEWPID"
-	NEWNS   NamespaceType = "NEWNS"
-	NEWUTS  NamespaceType = "NEWUTS"
-	NEWIPC  NamespaceType = "NEWIPC"
-	NEWUSER NamespaceType = "NEWUSER"
-)
-
-func NamespaceTypes() []NamespaceType {
-	return []NamespaceType{
-		NEWNET,
-		NEWPID,
-		NEWNS,
-		NEWUTS,
-		NEWIPC,
-		NEWUSER,
-	}
-}
-
-// Namespace defines configuration for each namespace.  It specifies an
-// alternate path that is able to be joined via setns.
-type Namespace struct {
-	Type NamespaceType `json:"type"`
-	Path string        `json:"path"`
-}
-
-func (n *Namespace) GetPath(pid int) string {
-	if n.Path != "" {
-		return n.Path
-	}
-	return fmt.Sprintf("/proc/%d/ns/%s", pid, n.file())
-}
-
-func (n *Namespace) file() string {
-	file := ""
-	switch n.Type {
-	case NEWNET:
-		file = "net"
-	case NEWNS:
-		file = "mnt"
-	case NEWPID:
-		file = "pid"
-	case NEWIPC:
-		file = "ipc"
-	case NEWUSER:
-		file = "user"
-	case NEWUTS:
-		file = "uts"
-	}
-	return file
-}
-
 type Namespaces []Namespace
-
-func (n *Namespaces) Remove(t NamespaceType) bool {
-	i := n.index(t)
-	if i == -1 {
-		return false
-	}
-	*n = append((*n)[:i], (*n)[i+1:]...)
-	return true
-}
-
-func (n *Namespaces) Add(t NamespaceType, path string) {
-	i := n.index(t)
-	if i == -1 {
-		*n = append(*n, Namespace{Type: t, Path: path})
-		return
-	}
-	(*n)[i].Path = path
-}
-
-func (n *Namespaces) index(t NamespaceType) int {
-	for i, ns := range *n {
-		if ns.Type == t {
-			return i
-		}
-	}
-	return -1
-}
-
-func (n *Namespaces) Contains(t NamespaceType) bool {
-	return n.index(t) != -1
-}