package fusefrontend_reverse import ( "context" "sync" "syscall" "github.com/hanwen/go-fuse/v2/fs" "github.com/hanwen/go-fuse/v2/fuse" ) var _ = (fs.NodeOpener)((*VirtualConfNode)(nil)) var _ = (fs.NodeGetattrer)((*VirtualConfNode)(nil)) type VirtualConfNode struct { fs.Inode path string } func (n *VirtualConfNode) Open(ctx context.Context, flags uint32) (fh fs.FileHandle, fuseFlags uint32, errno syscall.Errno) { fd, err := syscall.Open(n.path, syscall.O_RDONLY, 0) if err != nil { errno = fs.ToErrno(err) return } fh = &VirtualConfFile{fd: fd} return } func (n *VirtualConfNode) Getattr(ctx context.Context, fh fs.FileHandle, out *fuse.AttrOut) syscall.Errno { var st syscall.Stat_t err := syscall.Stat(n.path, &st) if err != nil { return fs.ToErrno(err) } out.FromStat(&st) return 0 } // Check that we have implemented the fs.File* interfaces var _ = (fs.FileReader)((*VirtualConfFile)(nil)) var _ = (fs.FileReleaser)((*VirtualConfFile)(nil)) type VirtualConfFile struct { mu sync.Mutex fd int } func (f *VirtualConfFile) Read(ctx context.Context, buf []byte, off int64) (res fuse.ReadResult, errno syscall.Errno) { f.mu.Lock() defer f.mu.Unlock() res = fuse.ReadResultFd(uintptr(f.fd), off, len(buf)) return } func (f *VirtualConfFile) Release(ctx context.Context) syscall.Errno { f.mu.Lock() defer f.mu.Unlock() if f.fd != -1 { err := syscall.Close(f.fd) f.fd = -1 return fs.ToErrno(err) } return syscall.EBADF }