fusefrontend: implement fsync on directories

Fixes https://github.com/rfjakob/gocryptfs/issues/587

1 files changed, 4 insertions, 1 deletions

diff --git a/internal/fusefrontend/file.go b/internal/fusefrontend/file.go
index cbf78e9..4866e65 100644
--- a/internal/fusefrontend/file.go
+++ b/internal/fusefrontend/file.go
@@ -427,7 +427,10 @@ func (f *File) Flush(ctx context.Context) syscall.Errno {
 	return fs.ToErrno(err)
 }
 
-// Fsync FUSE call
+// Fsync: handles FUSE opcode FSYNC
+//
+// Unfortunately, as Node.Fsync is also defined and takes precedence,
+// File.Fsync is never called at the moment.
 func (f *File) Fsync(ctx context.Context, flags uint32) (errno syscall.Errno) {
 	f.fdLock.RLock()
 	defer f.fdLock.RUnlock()