SYS_STATFS                   = 555 // { int statfs(char *path, struct statfs *buf); }
	SYS_FSTATFS                  = 556 // { int fstatfs(int fd, struct statfs *buf); }
	SYS_GETFSSTAT                = 557 // { int getfsstat(struct statfs *buf, long bufsize, int mode); }
	SYS_FHSTATFS                 = 558 // { int fhstatfs(const struct fhandle *u_fhp, struct statfs *buf); }

	SYS_STATFS                   = 555 // { int statfs(char *path, struct statfs *buf); }
	SYS_FSTATFS                  = 556 // { int fstatfs(int fd, struct statfs *buf); }
	SYS_GETFSSTAT                = 557 // { int getfsstat(struct statfs *buf, long bufsize, int mode); }
	SYS_FHSTATFS                 = 558 // { int fhstatfs(const struct fhandle *u_fhp, struct statfs *buf); }

//go:cgo_import_dynamic libc_fpathconf fpathconf "libc.so"
//go:cgo_import_dynamic libc_fstat fstat "libc.so"
//go:cgo_import_dynamic libc_fstatat fstatat "libc.so"
//go:cgo_import_dynamic libc_fstatvfs fstatvfs "libc.so"
//go:cgo_import_dynamic libc_getdents getdents "libc.so"
//go:cgo_import_dynamic libc_getgid getgid "libc.so"
//go:cgo_import_dynamic libc_getpid getpid "libc.so"
//go:cgo_import_dynamic libc_getpgid getpgid "libc.so"

	SYS_MAC_SYSCALL              = 394 // { int mac_syscall(const char *policy, int call, void *arg); }
	SYS_FHSTATFS                 = 398 // { int fhstatfs(const struct fhandle *u_fhp, struct statfs *buf); }
	SYS_KSEM_CLOSE               = 400 // { int ksem_close(semid_t id); }
	SYS_KSEM_POST                = 401 // { int ksem_post(semid_t id); }

//sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
//sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)

func Fstatfs(fd int, buf *Statfs_t) (err error) {
	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
	if e != 0 {
		err = errnoErr(e)
	}
	return
}

	SYS_MAC_SYSCALL              = 394 // { int mac_syscall(const char *policy, int call, void *arg); }
	SYS_FHSTATFS                 = 398 // { int fhstatfs(const struct fhandle *u_fhp, struct statfs *buf); }
	SYS_KSEM_CLOSE               = 400 // { int ksem_close(semid_t id); }
	SYS_KSEM_POST                = 401 // { int ksem_post(semid_t id); }

	_SYS_faccessat2 = 439
	_SYS_fchmodat2  = 452
)

//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)
//sysnb	Getuid() (uid int)

		err = e
	}
	return
}

func Shutdown(s, how int) (err error) {
	_, e := socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
	if e != 0 {
		err = e
	}
	return
}

func Fstatfs(fd int, buf *Statfs_t) (err error) {
	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
	if e != 0 {
		err = e
	}
	return
}

//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)

//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)