29 struct statfs {  struct
30   __statfs_word f_type;  argument
31   __statfs_word f_bsize;  argument
32   __statfs_word f_blocks;  argument
33   __statfs_word f_bfree;  argument
34   __statfs_word f_bavail;  argument
35   __statfs_word f_files;  argument
36   __statfs_word f_ffree;  argument
38   __statfs_word f_namelen;  argument
39   __statfs_word f_frsize;  argument
40   __statfs_word f_flags;  argument
41   __statfs_word f_spare[4];  argument