1struct statfs { 2 unsigned long f_type, f_bsize; 3 fsblkcnt_t f_blocks, f_bfree, f_bavail; 4 fsfilcnt_t f_files, f_ffree; 5 fsid_t f_fsid; 6 unsigned long f_namelen, f_frsize, f_flags, f_spare[4]; 7}; 8