struct statvfs {        ulong_t    f_bsize;     /* preferred file system block size          */        ulong_t    f_frsize;    /* fundamental file system block size        */        fsblkcnt_t f_blocks;    /* total # of blocks of f_frsize in fs       */         fsblkcnt_t f_bfree;     /* total # of free blocks                    */        fsblkcnt_t f_bavail;    /* # of blocks available to non super user   */        fsfilcnt_t f_files;     /* total # of file nodes (inode in JFS)      */        fsfilcnt_t f_ffree;     /* total # of free file nodes                */        fsfilcnt_t f_favail;    /* # of nodes available to non super user    */#ifdef _ALL_SOURCE        fsid_t     f_fsid;      /* file system id                            */#else        ulong_t    f_fsid;      /* file system id                            */#ifndef __64BIT__        ulong_t    f_fstype;    /* file system type                          */#endif#endif  /* _ALL_SOURCE */        char       f_basetype[_FSTYPSIZ]; /* Filesystem type name (eg. jfs)  */        ulong_t    f_flag;      /* bit mask of flags                         */        ulong_t    f_namemax;   /* maximum filename length                   */        char       f_fstr[32];  /* filesystem-specific string */        ulong_t    f_filler[16];/* reserved for future use                   */};