vendor: update buildkit to 8397d0b9

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/moby/buildkit/frontend/dockerfile/linter/linter.go

@@ -39,7 +39,7 @@ func New(config *Config) *Linter {
 }
 
 func (lc *Linter) Run(rule LinterRuleI, location []parser.Range, txt ...string) {
-	if lc == nil || lc.Warn == nil || lc.SkipAll {
+	if lc == nil || lc.Warn == nil || lc.SkipAll || rule.IsDeprecated() {
 		return
 	}
 	rulename := rule.RuleName()
@@ -71,11 +71,13 @@ func (lc *Linter) Error() error {
 type LinterRuleI interface {
 	RuleName() string
 	Run(warn LintWarnFunc, location []parser.Range, txt ...string)
+	IsDeprecated() bool
 }
 
 type LinterRule[F any] struct {
 	Name        string
 	Description string
+	Deprecated  bool
 	URL         string
 	Format      F
 }
@@ -92,6 +94,10 @@ func (rule *LinterRule[F]) Run(warn LintWarnFunc, location []parser.Range, txt .
 	warn(rule.Name, rule.Description, rule.URL, short, location)
 }
 
+func (rule *LinterRule[F]) IsDeprecated() bool {
+	return rule.Deprecated
+}
+
 func LintFormatShort(rulename, msg string, line int) string {
 	msg = fmt.Sprintf("%s: %s", rulename, msg)
 	if line > 0 {

vendor/github.com/moby/buildkit/session/filesync/diffcopy.go

@@ -21,10 +21,6 @@ type Stream interface {
 	RecvMsg(m interface{}) error
 }
 
-func sendDiffCopy(stream Stream, fs fsutil.FS, progress progressCb) error {
-	return errors.WithStack(fsutil.Send(stream.Context(), stream, fs, progress))
-}
-
 func newStreamWriter(stream grpc.ClientStream) io.WriteCloser {
 	wc := &streamWriterCloser{ClientStream: stream}
 	return &bufferedWriteCloser{Writer: bufio.NewWriter(wc), Closer: wc}

vendor/github.com/moby/buildkit/session/filesync/diffcopy_unix.go

@@ -0,0 +1,13 @@
+//go:build !windows
+// +build !windows
+
+package filesync
+
+import (
+	"github.com/pkg/errors"
+	"github.com/tonistiigi/fsutil"
+)
+
+func sendDiffCopy(stream Stream, fs fsutil.FS, progress progressCb) error {
+	return errors.WithStack(fsutil.Send(stream.Context(), stream, fs, progress))
+}

vendor/github.com/moby/buildkit/session/filesync/diffcopy_windows.go

@@ -0,0 +1,21 @@
+//go:build windows
+// +build windows
+
+package filesync
+
+import (
+	"github.com/Microsoft/go-winio"
+	"github.com/pkg/errors"
+	"github.com/tonistiigi/fsutil"
+)
+
+func sendDiffCopy(stream Stream, fs fsutil.FS, progress progressCb) error {
+	// adding one SeBackupPrivilege to the process so as to be able
+	// to run the subsequent goroutines in fsutil.Send that need
+	// to copy over special Windows metadata files.
+	// TODO(profnandaa): need to cross-check that this cannot be
+	// exploited in any way.
+	winio.EnableProcessPrivileges([]string{winio.SeBackupPrivilege})
+	defer winio.DisableProcessPrivileges([]string{winio.SeBackupPrivilege})
+	return errors.WithStack(fsutil.Send(stream.Context(), stream, fs, progress))
+}