update cdi version to v0.5.1

Signed-off-by: xiaoyang zhu <zhuxiaoyang1996@gmail.com>

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/cache.go

@@ -22,6 +22,8 @@ import (
 	"strings"
 	"sync"
 
+	cdi "github.com/container-orchestrated-devices/container-device-interface/specs-go"
+	"github.com/fsnotify/fsnotify"
 	"github.com/hashicorp/go-multierror"
 	oci "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/pkg/errors"
@@ -33,30 +35,46 @@ type Option func(*Cache) error
 // Cache stores CDI Specs loaded from Spec directories.
 type Cache struct {
 	sync.Mutex
-	specDirs []string
-	specs    map[string][]*Spec
-	devices  map[string]*Device
-	errors   map[string][]error
+	specDirs  []string
+	specs     map[string][]*Spec
+	devices   map[string]*Device
+	errors    map[string][]error
+	dirErrors map[string]error
+
+	autoRefresh bool
+	watch       *watch
+}
+
+// WithAutoRefresh returns an option to control automatic Cache refresh.
+// By default auto-refresh is enabled, the list of Spec directories are
+// monitored and the Cache is automatically refreshed whenever a change
+// is detected. This option can be used to disable this behavior when a
+// manually refreshed mode is preferable.
+func WithAutoRefresh(autoRefresh bool) Option {
+	return func(c *Cache) error {
+		c.autoRefresh = autoRefresh
+		return nil
+	}
 }
 
 // NewCache creates a new CDI Cache. The cache is populated from a set
 // of CDI Spec directories. These can be specified using a WithSpecDirs
 // option. The default set of directories is exposed in DefaultSpecDirs.
 func NewCache(options ...Option) (*Cache, error) {
-	c := &Cache{}
-
-	if err := c.Configure(options...); err != nil {
-		return nil, err
-	}
-	if len(c.specDirs) == 0 {
-		c.Configure(WithSpecDirs(DefaultSpecDirs...))
+	c := &Cache{
+		autoRefresh: true,
+		watch:       &watch{},
 	}
 
-	return c, c.Refresh()
+	WithSpecDirs(DefaultSpecDirs...)(c)
+	c.Lock()
+	defer c.Unlock()
+
+	return c, c.configure(options...)
 }
 
-// Configure applies options to the cache. Updates the cache if options have
-// changed.
+// Configure applies options to the Cache. Updates and refreshes the
+// Cache if options have changed.
 func (c *Cache) Configure(options ...Option) error {
 	if len(options) == 0 {
 		return nil
@@ -65,17 +83,54 @@ func (c *Cache) Configure(options ...Option) error {
 	c.Lock()
 	defer c.Unlock()
 
+	return c.configure(options...)
+}
+
+// Configure the Cache. Start/stop CDI Spec directory watch, refresh
+// the Cache if necessary.
+func (c *Cache) configure(options ...Option) error {
+	var err error
+
 	for _, o := range options {
-		if err := o(c); err != nil {
+		if err = o(c); err != nil {
 			return errors.Wrapf(err, "failed to apply cache options")
 		}
 	}
 
+	c.dirErrors = make(map[string]error)
+
+	c.watch.stop()
+	if c.autoRefresh {
+		c.watch.setup(c.specDirs, c.dirErrors)
+		c.watch.start(&c.Mutex, c.refresh, c.dirErrors)
+	}
+	c.refresh()
+
 	return nil
 }
 
 // Refresh rescans the CDI Spec directories and refreshes the Cache.
+// In manual refresh mode the cache is always refreshed. In auto-
+// refresh mode the cache is only refreshed if it is out of date.
 func (c *Cache) Refresh() error {
+	c.Lock()
+	defer c.Unlock()
+
+	// force a refresh in manual mode
+	if refreshed, err := c.refreshIfRequired(!c.autoRefresh); refreshed {
+		return err
+	}
+
+	// collect and return cached errors, much like refresh() does it
+	var result error
+	for _, err := range c.errors {
+		result = multierror.Append(result, err...)
+	}
+	return result
+}
+
+// Refresh the Cache by rescanning CDI Spec directories and files.
+func (c *Cache) refresh() error {
 	var (
 		specs      = map[string][]*Spec{}
 		devices    = map[string]*Device{}
@@ -135,9 +190,6 @@ func (c *Cache) Refresh() error {
 		delete(devices, conflict)
 	}
 
-	c.Lock()
-	defer c.Unlock()
-
 	c.specs = specs
 	c.devices = devices
 	c.errors = specErrors
@@ -149,6 +201,17 @@ func (c *Cache) Refresh() error {
 	return nil
 }
 
+// RefreshIfRequired triggers a refresh if necessary.
+func (c *Cache) refreshIfRequired(force bool) (bool, error) {
+	// We need to refresh if
+	// - it's forced by an explicitly call to Refresh() in manual mode
+	// - a missing Spec dir appears (added to watch) in auto-refresh mode
+	if force || (c.autoRefresh && c.watch.update(c.dirErrors)) {
+		return true, c.refresh()
+	}
+	return false, nil
+}
+
 // InjectDevices injects the given qualified devices to an OCI Spec. It
 // returns any unresolvable devices and an error if injection fails for
 // any of the devices.
@@ -162,6 +225,8 @@ func (c *Cache) InjectDevices(ociSpec *oci.Spec, devices ...string) ([]string, e
 	c.Lock()
 	defer c.Unlock()
 
+	c.refreshIfRequired(false)
+
 	edits := &ContainerEdits{}
 	specs := map[*Spec]struct{}{}
 
@@ -190,11 +255,46 @@ func (c *Cache) InjectDevices(ociSpec *oci.Spec, devices ...string) ([]string, e
 	return nil, nil
 }
 
+// WriteSpec writes a Spec file with the given content. Priority is used
+// as an index into the list of Spec directories to pick a directory for
+// the file, adjusting for any under- or overflows. If name has a "json"
+// or "yaml" extension it choses the encoding. Otherwise JSON encoding
+// is used with a "json" extension.
+func (c *Cache) WriteSpec(raw *cdi.Spec, name string) error {
+	var (
+		specDir string
+		path    string
+		prio    int
+		spec    *Spec
+		err     error
+	)
+
+	if len(c.specDirs) == 0 {
+		return errors.New("no Spec directories to write to")
+	}
+
+	prio = len(c.specDirs) - 1
+	specDir = c.specDirs[prio]
+	path = filepath.Join(specDir, name)
+	if ext := filepath.Ext(path); ext != ".json" && ext != ".yaml" {
+		path += ".json"
+	}
+
+	spec, err = NewSpec(raw, path, prio)
+	if err != nil {
+		return err
+	}
+
+	return spec.Write(true)
+}
+
 // GetDevice returns the cached device for the given qualified name.
 func (c *Cache) GetDevice(device string) *Device {
 	c.Lock()
 	defer c.Unlock()
 
+	c.refreshIfRequired(false)
+
 	return c.devices[device]
 }
 
@@ -205,6 +305,8 @@ func (c *Cache) ListDevices() []string {
 	c.Lock()
 	defer c.Unlock()
 
+	c.refreshIfRequired(false)
+
 	for name := range c.devices {
 		devices = append(devices, name)
 	}
@@ -220,6 +322,8 @@ func (c *Cache) ListVendors() []string {
 	c.Lock()
 	defer c.Unlock()
 
+	c.refreshIfRequired(false)
+
 	for vendor := range c.specs {
 		vendors = append(vendors, vendor)
 	}
@@ -238,6 +342,8 @@ func (c *Cache) ListClasses() []string {
 	c.Lock()
 	defer c.Unlock()
 
+	c.refreshIfRequired(false)
+
 	for _, specs := range c.specs {
 		for _, spec := range specs {
 			cmap[spec.GetClass()] = struct{}{}
@@ -256,6 +362,8 @@ func (c *Cache) GetVendorSpecs(vendor string) []*Spec {
 	c.Lock()
 	defer c.Unlock()
 
+	c.refreshIfRequired(false)
+
 	return c.specs[vendor]
 }
 
@@ -268,12 +376,158 @@ func (c *Cache) GetSpecErrors(spec *Spec) []error {
 // GetErrors returns all errors encountered during the last
 // cache refresh.
 func (c *Cache) GetErrors() map[string][]error {
-	return c.errors
+	c.Lock()
+	defer c.Unlock()
+
+	errors := map[string][]error{}
+	for path, errs := range c.errors {
+		errors[path] = errs
+	}
+	for path, err := range c.dirErrors {
+		errors[path] = []error{err}
+	}
+
+	return errors
 }
 
 // GetSpecDirectories returns the CDI Spec directories currently in use.
 func (c *Cache) GetSpecDirectories() []string {
+	c.Lock()
+	defer c.Unlock()
+
 	dirs := make([]string, len(c.specDirs))
 	copy(dirs, c.specDirs)
 	return dirs
 }
+
+// GetSpecDirErrors returns any errors related to configured Spec directories.
+func (c *Cache) GetSpecDirErrors() map[string]error {
+	if c.dirErrors == nil {
+		return nil
+	}
+
+	c.Lock()
+	defer c.Unlock()
+
+	errors := make(map[string]error)
+	for dir, err := range c.dirErrors {
+		errors[dir] = err
+	}
+	return errors
+}
+
+// Our fsnotify helper wrapper.
+type watch struct {
+	watcher *fsnotify.Watcher
+	tracked map[string]bool
+}
+
+// Setup monitoring for the given Spec directories.
+func (w *watch) setup(dirs []string, dirErrors map[string]error) {
+	var (
+		dir string
+		err error
+	)
+	w.tracked = make(map[string]bool)
+	for _, dir = range dirs {
+		w.tracked[dir] = false
+	}
+
+	w.watcher, err = fsnotify.NewWatcher()
+	if err != nil {
+		for _, dir := range dirs {
+			dirErrors[dir] = errors.Wrap(err, "failed to create watcher")
+		}
+		return
+	}
+
+	w.update(dirErrors)
+}
+
+// Start watching Spec directories for relevant changes.
+func (w *watch) start(m *sync.Mutex, refresh func() error, dirErrors map[string]error) {
+	go w.watch(w.watcher, m, refresh, dirErrors)
+}
+
+// Stop watching directories.
+func (w *watch) stop() {
+	if w.watcher == nil {
+		return
+	}
+
+	w.watcher.Close()
+	w.tracked = nil
+}
+
+// Watch Spec directory changes, triggering a refresh if necessary.
+func (w *watch) watch(fsw *fsnotify.Watcher, m *sync.Mutex, refresh func() error, dirErrors map[string]error) {
+	watch := fsw
+	if watch == nil {
+		return
+	}
+	for {
+		select {
+		case event, ok := <-watch.Events:
+			if !ok {
+				return
+			}
+
+			if (event.Op & (fsnotify.Rename | fsnotify.Remove | fsnotify.Write)) == 0 {
+				continue
+			}
+			if event.Op == fsnotify.Write {
+				if ext := filepath.Ext(event.Name); ext != ".json" && ext != ".yaml" {
+					continue
+				}
+			}
+
+			m.Lock()
+			if event.Op == fsnotify.Remove && w.tracked[event.Name] {
+				w.update(dirErrors, event.Name)
+			} else {
+				w.update(dirErrors)
+			}
+			refresh()
+			m.Unlock()
+
+		case _, ok := <-watch.Errors:
+			if !ok {
+				return
+			}
+		}
+	}
+}
+
+// Update watch with pending/missing or removed directories.
+func (w *watch) update(dirErrors map[string]error, removed ...string) bool {
+	var (
+		dir    string
+		ok     bool
+		err    error
+		update bool
+	)
+
+	for dir, ok = range w.tracked {
+		if ok {
+			continue
+		}
+
+		err = w.watcher.Add(dir)
+		if err == nil {
+			w.tracked[dir] = true
+			delete(dirErrors, dir)
+			update = true
+		} else {
+			w.tracked[dir] = false
+			dirErrors[dir] = errors.Wrap(err, "failed to monitor for changes")
+		}
+	}
+
+	for _, dir = range removed {
+		w.tracked[dir] = false
+		dirErrors[dir] = errors.New("directory removed")
+		update = true
+	}
+
+	return update
+}

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/container-edits.go

@@ -85,11 +85,13 @@ func (e *ContainerEdits) Apply(spec *oci.Spec) error {
 	}
 
 	for _, d := range e.DeviceNodes {
-		dev := d.ToOCI()
-		if err := fillMissingInfo(&dev); err != nil {
+		dn := DeviceNode{d}
+
+		err := dn.fillMissingInfo()
+		if err != nil {
 			return err
 		}
-
+		dev := d.ToOCI()
 		if dev.UID == nil && spec.Process != nil {
 			if uid := spec.Process.User.UID; uid > 0 {
 				dev.UID = &uid
@@ -288,26 +290,31 @@ func ensureOCIHooks(spec *oci.Spec) {
 }
 
 // fillMissingInfo fills in missing mandatory attributes from the host device.
-func fillMissingInfo(dev *oci.LinuxDevice) error {
-	if dev.Type != "" && (dev.Major != 0 || dev.Type == "p") {
-		return nil
-	}
-	hostDev, err := runc.DeviceFromPath(dev.Path, "rwm")
-	if err != nil {
-		return errors.Wrapf(err, "failed to stat CDI host device %q", dev.Path)
+func (d *DeviceNode) fillMissingInfo() error {
+	if d.HostPath == "" {
+		d.HostPath = d.Path
 	}
 
-	if dev.Type == "" {
-		dev.Type = string(hostDev.Type)
+	if d.Type != "" && (d.Major != 0 || d.Type == "p") {
+		return nil
+	}
+
+	hostDev, err := runc.DeviceFromPath(d.HostPath, "rwm")
+	if err != nil {
+		return errors.Wrapf(err, "failed to stat CDI host device %q", d.HostPath)
+	}
+
+	if d.Type == "" {
+		d.Type = string(hostDev.Type)
 	} else {
-		if dev.Type != string(hostDev.Type) {
-			return errors.Errorf("CDI device %q, host type mismatch (%s, %s)",
-				dev.Path, dev.Type, string(hostDev.Type))
+		if d.Type != string(hostDev.Type) {
+			return errors.Errorf("CDI device (%q, %q), host type mismatch (%s, %s)",
+				d.Path, d.HostPath, d.Type, string(hostDev.Type))
 		}
 	}
-	if dev.Major == 0 && dev.Type != "p" {
-		dev.Major = hostDev.Major
-		dev.Minor = hostDev.Minor
+	if d.Major == 0 && d.Type != "p" {
+		d.Major = hostDev.Major
+		d.Minor = hostDev.Minor
 	}
 
 	return nil

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/doc.go

@@ -67,6 +67,21 @@
 //
 // Cache Refresh
 //
+// By default the CDI Spec cache monitors the configured Spec directories
+// and automatically refreshes itself when necessary. This behavior can be
+// disabled using the WithAutoRefresh(false) option.
+//
+// Failure to set up monitoring for a Spec directory causes the directory to
+// get ignored and an error to be recorded among the Spec directory errors.
+// These errors can be queried using the GetSpecDirErrors() function. If the
+// error condition is transient, for instance a missing directory which later
+// gets created, the corresponding error will be removed once the condition
+// is over.
+//
+// With auto-refresh enabled injecting any CDI devices can be done without
+// an explicit call to Refresh(), using a code snippet similar to the
+// following:
+//
 // In a runtime implementation one typically wants to make sure the
 // CDI Spec cache is up to date before performing device injection.
 // A code snippet similar to the following accmplishes that:
@@ -146,5 +161,5 @@
 // schema names which switch the used schema to the in-repo validation
 // schema embedded into the binary or the now default no-op schema
 // correspondingly. Other names are interpreted as the path to the actual
-/// validation schema to load and use.
+// validation schema to load and use.
 package cdi

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/qualified-device.go

@@ -130,7 +130,7 @@ func ValidateVendorName(vendor string) error {
 		}
 	}
 	if !isAlphaNumeric(rune(vendor[len(vendor)-1])) {
-		return errors.Errorf("invalid vendor %q, should end with letter", vendor)
+		return errors.Errorf("invalid vendor %q, should end with a letter or digit", vendor)
 	}
 
 	return nil
@@ -158,7 +158,7 @@ func ValidateClassName(class string) error {
 		}
 	}
 	if !isAlphaNumeric(rune(class[len(class)-1])) {
-		return errors.Errorf("invalid class %q, should end with letter", class)
+		return errors.Errorf("invalid class %q, should end with a letter or digit", class)
 	}
 	return nil
 }
@@ -172,8 +172,11 @@ func ValidateDeviceName(name string) error {
 	if name == "" {
 		return errors.Errorf("invalid (empty) device name")
 	}
-	if !isLetter(rune(name[0])) {
-		return errors.Errorf("invalid name %q, should start with letter", name)
+	if !isAlphaNumeric(rune(name[0])) {
+		return errors.Errorf("invalid class %q, should start with a letter or digit", name)
+	}
+	if len(name) == 1 {
+		return nil
 	}
 	for _, c := range string(name[1 : len(name)-1]) {
 		switch {
@@ -185,7 +188,7 @@ func ValidateDeviceName(name string) error {
 		}
 	}
 	if !isAlphaNumeric(rune(name[len(name)-1])) {
-		return errors.Errorf("invalid name %q, should start with letter", name)
+		return errors.Errorf("invalid name %q, should end with a letter or digit", name)
 	}
 	return nil
 }

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/registry.go

@@ -19,6 +19,7 @@ package cdi
 import (
 	"sync"
 
+	cdi "github.com/container-orchestrated-devices/container-device-interface/specs-go"
 	oci "github.com/opencontainers/runtime-spec/specs-go"
 )
 
@@ -40,6 +41,8 @@ type Registry interface {
 // RegistryRefresher is the registry interface for refreshing the
 // cache of CDI Specs and devices.
 //
+// Configure reconfigures the registry with the given options.
+//
 // Refresh rescans all CDI Spec directories and updates the
 // state of the cache to reflect any changes. It returns any
 // errors encountered during the refresh.
@@ -50,10 +53,15 @@ type Registry interface {
 // GetSpecDirectories returns the set up CDI Spec directories
 // currently in use. The directories are returned in the scan
 // order of Refresh().
+//
+// GetSpecDirErrors returns any errors related to the configured
+// Spec directories.
 type RegistryRefresher interface {
+	Configure(...Option) error
 	Refresh() error
 	GetErrors() map[string][]error
 	GetSpecDirectories() []string
+	GetSpecDirErrors() map[string]error
 }
 
 // RegistryResolver is the registry interface for injecting CDI
@@ -90,11 +98,15 @@ type RegistryDeviceDB interface {
 //
 // GetSpecErrors returns any errors for the Spec encountered during
 // the last cache refresh.
+//
+// WriteSpec writes the Spec with the given content and name to the
+// last Spec directory.
 type RegistrySpecDB interface {
 	ListVendors() []string
 	ListClasses() []string
 	GetVendorSpecs(vendor string) []*Spec
 	GetSpecErrors(*Spec) []error
+	WriteSpec(raw *cdi.Spec, name string) error
 }
 
 type registry struct {

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/spec-dirs.go

@@ -17,10 +17,10 @@
 package cdi
 
 import (
+	"errors"
+	"io/fs"
 	"os"
 	"path/filepath"
-
-	"github.com/pkg/errors"
 )
 
 const (
@@ -45,10 +45,11 @@ var (
 // WithSpecDirs returns an option to override the CDI Spec directories.
 func WithSpecDirs(dirs ...string) Option {
 	return func(c *Cache) error {
-		c.specDirs = make([]string, len(dirs))
+		specDirs := make([]string, len(dirs))
 		for i, dir := range dirs {
-			c.specDirs[i] = filepath.Clean(dir)
+			specDirs[i] = filepath.Clean(dir)
 		}
+		c.specDirs = specDirs
 		return nil
 	}
 }
@@ -78,6 +79,9 @@ func scanSpecDirs(dirs []string, scanFn scanSpecFunc) error {
 		err = filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
 			// for initial stat failure Walk calls us with nil info
 			if info == nil {
+				if errors.Is(err, fs.ErrNotExist) {
+					return nil
+				}
 				return err
 			}
 			// first call from Walk is for dir itself, others we skip

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/spec.go

@@ -17,6 +17,7 @@
 package cdi
 
 import (
+	"encoding/json"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -34,7 +35,12 @@ var (
 		"0.1.0": {},
 		"0.2.0": {},
 		"0.3.0": {},
+		"0.4.0": {},
+		"0.5.0": {},
 	}
+
+	// Externally set CDI Spec validation function.
+	specValidator func(*cdi.Spec) error
 )
 
 // Spec represents a single CDI Spec. It is usually loaded from a
@@ -64,7 +70,7 @@ func ReadSpec(path string, priority int) (*Spec, error) {
 		return nil, errors.Wrapf(err, "failed to read CDI Spec %q", path)
 	}
 
-	raw, err := parseSpec(data)
+	raw, err := ParseSpec(data)
 	if err != nil {
 		return nil, errors.Wrapf(err, "failed to parse CDI Spec %q", path)
 	}
@@ -85,7 +91,7 @@ func ReadSpec(path string, priority int) (*Spec, error) {
 // priority. If Spec data validation fails NewSpec returns a nil
 // Spec and an error.
 func NewSpec(raw *cdi.Spec, path string, priority int) (*Spec, error) {
-	err := validateWithSchema(raw)
+	err := validateSpec(raw)
 	if err != nil {
 		return nil, err
 	}
@@ -105,6 +111,56 @@ func NewSpec(raw *cdi.Spec, path string, priority int) (*Spec, error) {
 	return spec, nil
 }
 
+// Write the CDI Spec to the file associated with it during instantiation
+// by NewSpec() or ReadSpec().
+func (s *Spec) Write(overwrite bool) error {
+	var (
+		data []byte
+		dir  string
+		tmp  *os.File
+		err  error
+	)
+
+	err = validateSpec(s.Spec)
+	if err != nil {
+		return err
+	}
+
+	if filepath.Ext(s.path) == ".yaml" {
+		data, err = yaml.Marshal(s.Spec)
+	} else {
+		data, err = json.Marshal(s.Spec)
+	}
+	if err != nil {
+		return errors.Wrap(err, "failed to marshal Spec file")
+	}
+
+	dir = filepath.Dir(s.path)
+	err = os.MkdirAll(dir, 0o755)
+	if err != nil {
+		return errors.Wrap(err, "failed to create Spec dir")
+	}
+
+	tmp, err = os.CreateTemp(dir, "spec.*.tmp")
+	if err != nil {
+		return errors.Wrap(err, "failed to create Spec file")
+	}
+	_, err = tmp.Write(data)
+	tmp.Close()
+	if err != nil {
+		return errors.Wrap(err, "failed to write Spec file")
+	}
+
+	err = renameIn(dir, filepath.Base(tmp.Name()), filepath.Base(s.path), overwrite)
+
+	if err != nil {
+		os.Remove(tmp.Name())
+		err = errors.Wrap(err, "failed to write Spec file")
+	}
+
+	return err
+}
+
 // GetVendor returns the vendor of this Spec.
 func (s *Spec) GetVendor() string {
 	return s.vendor
@@ -179,8 +235,8 @@ func validateVersion(version string) error {
 	return nil
 }
 
-// Parse raw CDI Spec file data.
-func parseSpec(data []byte) (*cdi.Spec, error) {
+// ParseSpec parses CDI Spec data into a raw CDI Spec.
+func ParseSpec(data []byte) (*cdi.Spec, error) {
 	var raw *cdi.Spec
 	err := yaml.UnmarshalStrict(data, &raw)
 	if err != nil {
@@ -188,3 +244,22 @@ func parseSpec(data []byte) (*cdi.Spec, error) {
 	}
 	return raw, nil
 }
+
+// SetSpecValidator sets a CDI Spec validator function. This function
+// is used for extra CDI Spec content validation whenever a Spec file
+// loaded (using ReadSpec() or NewSpec()) or written (Spec.Write()).
+func SetSpecValidator(fn func(*cdi.Spec) error) {
+	specValidator = fn
+}
+
+// validateSpec validates the Spec using the extneral validator.
+func validateSpec(raw *cdi.Spec) error {
+	if specValidator == nil {
+		return nil
+	}
+	err := specValidator(raw)
+	if err != nil {
+		return errors.Wrap(err, "Spec validation failed")
+	}
+	return nil
+}

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/spec_linux.go

@@ -17,30 +17,32 @@
 package cdi
 
 import (
-	"github.com/container-orchestrated-devices/container-device-interface/schema"
-	cdi "github.com/container-orchestrated-devices/container-device-interface/specs-go"
+	"os"
+
+	"github.com/pkg/errors"
+	"golang.org/x/sys/unix"
 )
 
-const (
-	// DefaultExternalSchema is the JSON schema to load if found.
-	DefaultExternalSchema = "/etc/cdi/schema/schema.json"
-)
+// Rename src to dst, both relative to the directory dir. If dst already exists
+// refuse renaming with an error unless overwrite is explicitly asked for.
+func renameIn(dir, src, dst string, overwrite bool) error {
+	var flags uint
 
-// SetSchema sets the Spec JSON validation schema to use.
-func SetSchema(name string) error {
-	s, err := schema.Load(name)
+	dirf, err := os.Open(dir)
 	if err != nil {
-		return err
+		return errors.Wrap(err, "rename failed")
 	}
-	schema.Set(s)
+	defer dirf.Close()
+
+	if !overwrite {
+		flags = unix.RENAME_NOREPLACE
+	}
+
+	dirFd := int(dirf.Fd())
+	err = unix.Renameat2(dirFd, src, dirFd, dst, flags)
+	if err != nil {
+		return errors.Wrap(err, "rename failed")
+	}
+
 	return nil
 }
-
-// Validate CDI Spec against JSON Schema.
-func validateWithSchema(raw *cdi.Spec) error {
-	return schema.ValidateType(raw)
-}
-
-func init() {
-	SetSchema(DefaultExternalSchema)
-}

vendor/github.com/container-orchestrated-devices/container-device-interface/pkg/cdi/spec_other.go

@@ -0,0 +1,39 @@
+//go:build !linux
+// +build !linux
+
+/*
+   Copyright © 2022 The CDI Authors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package cdi
+
+import (
+	"os"
+	"path/filepath"
+)
+
+// Rename src to dst, both relative to the directory dir. If dst already exists
+// refuse renaming with an error unless overwrite is explicitly asked for.
+func renameIn(dir, src, dst string, overwrite bool) error {
+	src = filepath.Join(dir, src)
+	dst = filepath.Join(dir, dst)
+
+	_, err := os.Stat(dst)
+	if err == nil && !overwrite {
+		return os.ErrExist
+	}
+
+	return os.Rename(src, dst)
+}