all: sync with master; upd chlog

internal/aghrenameio/renameio_windows.go

@@ -0,0 +1,74 @@
+//go:build windows
+
+package aghrenameio
+
+import (
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+
+	"github.com/AdguardTeam/golibs/errors"
+)
+
+// pendingFile is a wrapper around [*os.File] calling [os.Rename] in its Close
+// method.
+type pendingFile struct {
+	file       *os.File
+	targetPath string
+}
+
+// type check
+var _ PendingFile = (*pendingFile)(nil)
+
+// Cleanup implements the [PendingFile] interface for *pendingFile.
+func (f *pendingFile) Cleanup() (err error) {
+	closeErr := f.file.Close()
+	err = os.Remove(f.file.Name())
+
+	// Put closeErr into the deferred error because that's where it is usually
+	// expected.
+	return errors.WithDeferred(err, closeErr)
+}
+
+// CloseReplace implements the [PendingFile] interface for *pendingFile.
+func (f *pendingFile) CloseReplace() (err error) {
+	err = f.file.Close()
+	if err != nil {
+		return fmt.Errorf("closing: %w", err)
+	}
+
+	err = os.Rename(f.file.Name(), f.targetPath)
+	if err != nil {
+		return fmt.Errorf("renaming: %w", err)
+	}
+
+	return nil
+}
+
+// Write implements the [PendingFile] interface for *pendingFile.
+func (f *pendingFile) Write(b []byte) (n int, err error) {
+	return f.file.Write(b)
+}
+
+// NewPendingFile is a wrapper around [os.CreateTemp].
+//
+// f.Close must be called to finish the renaming.
+func newPendingFile(filePath string, mode fs.FileMode) (f PendingFile, err error) {
+	// Use the same directory as the file itself, because moves across
+	// filesystems can be especially problematic.
+	file, err := os.CreateTemp(filepath.Dir(filePath), "")
+	if err != nil {
+		return nil, fmt.Errorf("opening pending file: %w", err)
+	}
+
+	err = file.Chmod(mode)
+	if err != nil {
+		return nil, fmt.Errorf("preparing pending file: %w", err)
+	}
+
+	return &pendingFile{
+		file:       file,
+		targetPath: filePath,
+	}, nil
+}