pub const TCP_KEEPINTVL: ::c_int = 36;
pub const TCP_CONGESTION: ::c_int = 37;
+pub const F_OFD_GETLK: ::c_int = 50;
+pub const F_OFD_SETLKL: ::c_int = 51;
+pub const F_OFD_SETLKW: ::c_int = 52;
+pub const F_FLOCK: ::c_int = 55;
+pub const F_FLOCKW: ::c_int = 56;
+
extern "C" {
pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;