int llapi_fid2path(const char *device, const char *fidstr, char *path,
int pathlen, long long *recno, int *linkno);
int llapi_path2fid(const char *path, struct lu_fid *fid);
int llapi_fid2path(const char *device, const char *fidstr, char *path,
int pathlen, long long *recno, int *linkno);
int llapi_path2fid(const char *path, struct lu_fid *fid);