Use removeall_noat variant on Windows

src/os/removeall_at.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build unix || wasip1 || windows
+//go:build unix || wasip1
 
 package os
 

src/os/removeall_noat.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (js && wasm) || plan9
+//go:build (js && wasm) || plan9 || windows
 
 package os
 

src/os/root.go

@@ -189,12 +189,6 @@ func (r *Root) Remove(name string) error {
 	return rootRemove(r, name)
 }
 
-// RemoveAll removes the named file or directory and any children that it contains.
-// See [RemoveAll] for more details.
-func (r *Root) RemoveAll(name string) error {
-	return rootRemoveAll(r, name)
-}
-
 // Stat returns a [FileInfo] describing the named file in the root.
 // See [Stat] for more details.
 func (r *Root) Stat(name string) (FileInfo, error) {

src/os/root_noopenat.go

@@ -11,7 +11,6 @@ import (
 	"internal/filepathlite"
 	"internal/stringslite"
 	"sync/atomic"
-	"syscall"
 	"time"
 )
 
@@ -186,25 +185,6 @@ func rootRemove(r *Root, name string) error {
 	return nil
 }
 
-func rootRemoveAll(r *Root, name string) error {
-	if endsWithDot(name) {
-		// Consistency with os.RemoveAll: Return EINVAL when trying to remove .
-		return &PathError{Op: "RemoveAll", Path: name, Err: syscall.EINVAL}
-	}
-	if err := checkPathEscapesLstat(r, name); err != nil {
-		if err == syscall.ENOTDIR {
-			// Some intermediate path component is not a directory.
-			// RemoveAll treats this as success (since the target doesn't exist).
-			return nil
-		}
-		return &PathError{Op: "RemoveAll", Path: name, Err: err}
-	}
-	if err := RemoveAll(joinPath(r.root.name, name)); err != nil {
-		return &PathError{Op: "RemoveAll", Path: name, Err: underlyingError(err)}
-	}
-	return nil
-}
-
 func rootReadlink(r *Root, name string) (string, error) {
 	if err := checkPathEscapesLstat(r, name); err != nil {
 		return "", &PathError{Op: "readlinkat", Path: name, Err: err}

src/os/root_openat.go

@@ -194,28 +194,6 @@ func rootRemove(r *Root, name string) error {
 	return nil
 }
 
-func rootRemoveAll(r *Root, name string) error {
-	// Consistency with os.RemoveAll: Strip trailing /s from the name,
-	// so RemoveAll("not_a_directory/") succeeds.
-	for len(name) > 0 && IsPathSeparator(name[len(name)-1]) {
-		name = name[:len(name)-1]
-	}
-	if endsWithDot(name) {
-		// Consistency with os.RemoveAll: Return EINVAL when trying to remove .
-		return &PathError{Op: "RemoveAll", Path: name, Err: syscall.EINVAL}
-	}
-	_, err := doInRoot(r, name, nil, func(parent sysfdType, name string) (struct{}, error) {
-		return struct{}{}, removeAllFrom(parent, name)
-	})
-	if IsNotExist(err) {
-		return nil
-	}
-	if err != nil {
-		return &PathError{Op: "RemoveAll", Path: name, Err: underlyingError(err)}
-	}
-	return err
-}
-
 func rootRename(r *Root, oldname, newname string) error {
 	_, err := doInRoot(r, oldname, nil, func(oldparent sysfdType, oldname string) (struct{}, error) {
 		_, err := doInRoot(r, newname, nil, func(newparent sysfdType, newname string) (struct{}, error) {