Initial commit

Proof-of-concept implementation. Bugs will occur.

vendor/github.com/hanwen/go-fuse/v2/fs/files_linux.go

@@ -0,0 +1,46 @@
+// Copyright 2019 the Go-FUSE Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package fs
+
+import (
+	"context"
+	"syscall"
+
+	"github.com/hanwen/go-fuse/v2/fuse"
+	"golang.org/x/sys/unix"
+)
+
+func setBlocks(out *fuse.Attr) {
+	if out.Blksize > 0 {
+		return
+	}
+
+	out.Blksize = 4096
+	pages := (out.Size + 4095) / 4096
+	out.Blocks = pages * 8
+}
+
+func setStatxBlocks(out *fuse.Statx) {
+	if out.Blksize > 0 {
+		return
+	}
+
+	out.Blksize = 4096
+	pages := (out.Size + 4095) / 4096
+	out.Blocks = pages * 8
+}
+
+func (f *loopbackFile) Statx(ctx context.Context, flags uint32, mask uint32, out *fuse.StatxOut) syscall.Errno {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	st := unix.Statx_t{}
+	err := unix.Statx(f.fd, "", int(flags), int(mask), &st)
+	if err != nil {
+		return ToErrno(err)
+	}
+	out.FromStatx(&st)
+
+	return OK
+}