pub const F_SETOWN: ::c_int = 24;
pub const F_SETLK: ::c_int = 6;
pub const F_SETLKW: ::c_int = 7;
+pub const F_OFD_GETLK: ::c_int = 36;
+pub const F_OFD_SETLK: ::c_int = 37;
+pub const F_OFD_SETLKW: ::c_int = 38;
pub const SFD_NONBLOCK: ::c_int = 0x80;