19:  "operation not supported by device",
	20:  "not a directory",
	21:  "is a directory",
	22:  "invalid argument",
	23:  "too many open files in system",
	24:  "too many open files",
	25:  "inappropriate ioctl for device",
	26:  "text file busy",
	27:  "file too large",
	28:  "no space left on device",
	29:  "illegal seek",
	30:  "read-only file system",
	31:  "too many links",
	32:  "broken pipe",

	19: "operation not supported by device",
	20: "not a directory",
	21: "is a directory",
	22: "invalid argument",
	23: "too many open files in system",
	24: "too many open files",
	25: "inappropriate ioctl for device",
	26: "text file busy",
	27: "file too large",
	28: "no space left on device",
	29: "illegal seek",
	30: "read-only file system",
	31: "too many links",
	32: "broken pipe",

	19: "operation not supported by device",
	20: "not a directory",
	21: "is a directory",
	22: "invalid argument",
	23: "too many open files in system",
	24: "too many open files",
	25: "inappropriate ioctl for device",
	26: "text file busy",
	27: "file too large",
	28: "no space left on device",
	29: "illegal seek",
	30: "read-only file system",
	31: "too many links",
	32: "broken pipe",

        }

        if ( this.disallowCompound == null ) {
            // Samba woes on these
            // Smb2SessionSetupRequest + X -> INTERNAL_ERROR
            // Smb2TreeConnectRequest + IoCtl -> NETWORK_NAME_DELETED
            this.disallowCompound = new HashSet<>(Arrays.asList("Smb2SessionSetupRequest", "Smb2TreeConnectRequest"));
        }
    }

	return
}

//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD

// TODO
func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	return -1, ENOSYS
}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

	19: "operation not supported by device",
	20: "not a directory",
	21: "is a directory",
	22: "invalid argument",
	23: "too many open files in system",
	24: "too many open files",
	25: "inappropriate ioctl for device",
	26: "text file busy",
	27: "file too large",
	28: "no space left on device",
	29: "illegal seek",
	30: "read-only file system",
	31: "too many links",
	32: "broken pipe",

	19: "operation not supported by device",
	20: "not a directory",
	21: "is a directory",
	22: "invalid argument",
	23: "too many open files in system",
	24: "too many open files",
	25: "inappropriate ioctl for device",
	26: "text file busy",
	27: "file too large",
	28: "no space left on device",
	29: "illegal seek",
	30: "read-only file system",
	31: "too many links",
	32: "broken pipe",

		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
	}
	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
	n = int(r0)
	if e1 != 0 {
		err = e1
	}
	return
}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

	getresuid(&r, &e, &s)
	return int(r), int(e), int(s)
}

func Getresgid() (rgid, egid, sgid int) {
	var r, e, s _C_int
	getresgid(&r, &e, &s)
	return int(r), int(e), int(s)
}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

	{21, "EISDIR", "is a directory"},
	{22, "EINVAL", "invalid argument"},
	{23, "ENFILE", "too many open files in system"},
	{24, "EMFILE", "too many open files"},
	{25, "ENOTTY", "inappropriate ioctl for device"},
	{26, "ETXTBSY", "text file busy"},
	{27, "EFBIG", "file too large"},
	{28, "ENOSPC", "no space left on device"},
	{29, "ESPIPE", "illegal seek"},
	{30, "EROFS", "read-only file system"},